diff --git a/<desired bridge log path> b/<desired bridge log path>
index 6f7e5d5..05a5672 100644
--- a/<desired bridge log path>	
+++ b/<desired bridge log path>	
@@ -391,3 +391,165 @@ INFO 2020-01-24 02:28:30,582 judgehandler judge1: Grading has begun on: 36
 INFO 2020-01-24 02:28:30,714 judgehandler judge1: 3 test case(s) completed on: 36
 INFO 2020-01-24 02:28:30,783 judgehandler judge1: Grading has ended on: 36
 INFO 2020-01-24 02:28:30,784 judgelist Judge available after grading 36: judge1
+INFO 2020-01-24 04:00:04,615 judgehandler judge1: Updated problem list
+INFO 2020-01-24 04:01:41,763 judgehandler judge1: Updated problem list
+INFO 2020-01-24 04:02:04,245 judgelist Free judges: 1
+INFO 2020-01-24 04:02:04,245 judgelist Dispatched submission 37 to: judge1
+INFO 2020-01-24 04:02:04,253 judgehandler Submission acknowledged: 37
+INFO 2020-01-24 04:02:04,288 judgehandler judge1: Grading has begun on: 37
+INFO 2020-01-24 04:02:04,357 judgehandler judge1: 1 test case(s) completed on: 37
+INFO 2020-01-24 04:02:04,460 judgehandler judge1: 2 test case(s) completed on: 37
+INFO 2020-01-24 04:02:04,528 judgehandler judge1: Grading has ended on: 37
+INFO 2020-01-24 04:02:04,529 judgelist Judge available after grading 37: judge1
+INFO 2020-01-24 04:02:20,761 judgelist Free judges: 1
+INFO 2020-01-24 04:02:20,762 judgelist Dispatched submission 38 to: judge1
+INFO 2020-01-24 04:02:20,778 judgehandler Submission acknowledged: 38
+INFO 2020-01-24 04:02:20,815 judgehandler judge1: Grading has begun on: 38
+INFO 2020-01-24 04:02:20,910 judgehandler judge1: 3 test case(s) completed on: 38
+INFO 2020-01-24 04:02:21,051 judgehandler judge1: Grading has ended on: 38
+INFO 2020-01-24 04:02:21,051 judgelist Judge available after grading 38: judge1
+INFO 2020-01-24 04:02:42,811 judgelist Free judges: 1
+INFO 2020-01-24 04:02:42,811 judgelist Dispatched submission 39 to: judge1
+INFO 2020-01-24 04:02:42,828 judgehandler Submission acknowledged: 39
+INFO 2020-01-24 04:02:42,863 judgehandler judge1: Grading has begun on: 39
+INFO 2020-01-24 04:02:42,953 judgehandler judge1: 3 test case(s) completed on: 39
+INFO 2020-01-24 04:02:43,035 judgehandler judge1: Grading has ended on: 39
+INFO 2020-01-24 04:02:43,035 judgelist Judge available after grading 39: judge1
+INFO 2020-01-24 04:03:07,798 judgelist Free judges: 1
+INFO 2020-01-24 04:03:07,798 judgelist Dispatched submission 40 to: judge1
+INFO 2020-01-24 04:03:07,815 judgehandler Submission acknowledged: 40
+INFO 2020-01-24 04:03:07,855 judgehandler judge1: Grading has begun on: 40
+INFO 2020-01-24 04:03:07,983 judgehandler judge1: 3 test case(s) completed on: 40
+INFO 2020-01-24 04:03:08,056 judgehandler judge1: Grading has ended on: 40
+INFO 2020-01-24 04:03:08,056 judgelist Judge available after grading 40: judge1
+INFO 2020-01-24 04:17:47,286 judgehandler judge1: Updated problem list
+INFO 2020-01-24 05:02:07,043 judgehandler judge1: Updated problem list
+INFO 2020-01-24 05:03:19,384 judgelist Free judges: 1
+INFO 2020-01-24 05:03:19,385 judgelist Dispatched submission 40 to: judge1
+INFO 2020-01-24 05:03:19,394 judgehandler Submission acknowledged: 40
+INFO 2020-01-24 05:03:19,441 judgehandler judge1: Grading has begun on: 40
+INFO 2020-01-24 05:03:19,596 judgehandler judge1: 5 test case(s) completed on: 40
+INFO 2020-01-24 05:03:19,847 judgehandler judge1: 7 test case(s) completed on: 40
+INFO 2020-01-24 05:03:20,098 judgehandler judge1: 8 test case(s) completed on: 40
+INFO 2020-01-24 05:03:20,921 judgehandler judge1: 4 test case(s) completed on: 40
+INFO 2020-01-24 05:03:21,120 judgehandler judge1: 1 test case(s) completed on: 40
+INFO 2020-01-24 05:03:21,380 judgehandler judge1: 5 test case(s) completed on: 40
+INFO 2020-01-24 05:03:21,521 judgehandler judge1: 3 test case(s) completed on: 40
+INFO 2020-01-24 05:03:21,656 judgehandler judge1: 7 test case(s) completed on: 40
+INFO 2020-01-24 05:03:21,852 judgehandler judge1: 7 test case(s) completed on: 40
+INFO 2020-01-24 05:03:22,103 judgehandler judge1: 8 test case(s) completed on: 40
+INFO 2020-01-24 05:03:22,354 judgehandler judge1: 7 test case(s) completed on: 40
+INFO 2020-01-24 05:03:22,813 judgehandler judge1: 4 test case(s) completed on: 40
+INFO 2020-01-24 05:03:23,394 judgehandler judge1: 1 test case(s) completed on: 40
+INFO 2020-01-24 05:03:23,741 judgehandler judge1: 3 test case(s) completed on: 40
+INFO 2020-01-24 05:03:24,608 judgehandler judge1: 1 test case(s) completed on: 40
+INFO 2020-01-24 05:03:24,757 judgehandler judge1: 6 test case(s) completed on: 40
+INFO 2020-01-24 05:03:24,907 judgehandler judge1: 2 test case(s) completed on: 40
+INFO 2020-01-24 05:03:25,211 judgehandler judge1: 1 test case(s) completed on: 40
+INFO 2020-01-24 05:03:25,355 judgehandler judge1: 4 test case(s) completed on: 40
+INFO 2020-01-24 05:03:25,498 judgehandler judge1: 7 test case(s) completed on: 40
+INFO 2020-01-24 05:03:25,643 judgehandler judge1: 7 test case(s) completed on: 40
+INFO 2020-01-24 05:03:26,556 judgehandler judge1: 2 test case(s) completed on: 40
+INFO 2020-01-24 05:03:26,717 judgehandler judge1: Grading has ended on: 40
+INFO 2020-01-24 05:03:26,717 judgelist Judge available after grading 40: judge1
+INFO 2020-01-24 05:03:44,777 judgelist Free judges: 1
+INFO 2020-01-24 05:03:44,778 judgelist Dispatched submission 38 to: judge1
+INFO 2020-01-24 05:03:44,794 judgehandler Submission acknowledged: 38
+INFO 2020-01-24 05:03:45,013 judgehandler judge1: Grading has begun on: 38
+INFO 2020-01-24 05:03:45,140 judgehandler judge1: 7 test case(s) completed on: 38
+INFO 2020-01-24 05:03:45,391 judgehandler judge1: 7 test case(s) completed on: 38
+INFO 2020-01-24 05:03:45,789 judgehandler judge1: 3 test case(s) completed on: 38
+INFO 2020-01-24 05:03:46,267 judgehandler judge1: 1 test case(s) completed on: 38
+INFO 2020-01-24 05:03:47,279 judgehandler judge1: 3 test case(s) completed on: 38
+INFO 2020-01-24 05:03:47,514 judgehandler judge1: 3 test case(s) completed on: 38
+INFO 2020-01-24 05:03:47,618 judgehandler judge1: 1 test case(s) completed on: 38
+INFO 2020-01-24 05:03:47,712 judgehandler judge1: 1 test case(s) completed on: 38
+INFO 2020-01-24 05:03:47,805 judgehandler judge1: 1 test case(s) completed on: 38
+INFO 2020-01-24 05:03:47,899 judgehandler judge1: 4 test case(s) completed on: 38
+INFO 2020-01-24 05:03:47,994 judgehandler judge1: 7 test case(s) completed on: 38
+INFO 2020-01-24 05:03:48,134 judgehandler judge1: 7 test case(s) completed on: 38
+INFO 2020-01-24 05:03:48,275 judgehandler judge1: 7 test case(s) completed on: 38
+INFO 2020-01-24 05:03:48,399 judgehandler judge1: 8 test case(s) completed on: 38
+INFO 2020-01-24 05:03:48,650 judgehandler judge1: 7 test case(s) completed on: 38
+INFO 2020-01-24 05:03:48,901 judgehandler judge1: 7 test case(s) completed on: 38
+INFO 2020-01-24 05:03:49,762 judgehandler judge1: 2 test case(s) completed on: 38
+INFO 2020-01-24 05:03:49,957 judgehandler judge1: 1 test case(s) completed on: 38
+INFO 2020-01-24 05:03:50,194 judgehandler judge1: 7 test case(s) completed on: 38
+INFO 2020-01-24 05:03:50,314 judgehandler judge1: 7 test case(s) completed on: 38
+INFO 2020-01-24 05:03:50,703 judgehandler judge1: 7 test case(s) completed on: 38
+INFO 2020-01-24 05:03:50,846 judgehandler judge1: 2 test case(s) completed on: 38
+INFO 2020-01-24 05:03:51,804 judgehandler judge1: Grading has ended on: 38
+INFO 2020-01-24 05:03:51,804 judgelist Judge available after grading 38: judge1
+INFO 2020-01-24 05:04:06,445 judgelist Free judges: 1
+INFO 2020-01-24 05:04:06,446 judgelist Dispatched submission 39 to: judge1
+INFO 2020-01-24 05:04:06,459 judgehandler Submission acknowledged: 39
+INFO 2020-01-24 05:04:06,506 judgehandler judge1: Grading has begun on: 39
+INFO 2020-01-24 05:04:06,677 judgehandler judge1: 4 test case(s) completed on: 39
+INFO 2020-01-24 05:04:06,928 judgehandler judge1: 7 test case(s) completed on: 39
+INFO 2020-01-24 05:04:07,178 judgehandler judge1: 7 test case(s) completed on: 39
+INFO 2020-01-24 05:04:07,429 judgehandler judge1: 7 test case(s) completed on: 39
+INFO 2020-01-24 05:04:07,679 judgehandler judge1: 8 test case(s) completed on: 39
+INFO 2020-01-24 05:04:08,955 judgehandler judge1: 2 test case(s) completed on: 39
+INFO 2020-01-24 05:04:09,048 judgehandler judge1: 1 test case(s) completed on: 39
+INFO 2020-01-24 05:04:09,142 judgehandler judge1: 1 test case(s) completed on: 39
+INFO 2020-01-24 05:04:09,235 judgehandler judge1: 4 test case(s) completed on: 39
+INFO 2020-01-24 05:04:09,325 judgehandler judge1: 6 test case(s) completed on: 39
+INFO 2020-01-24 05:04:09,436 judgehandler judge1: 8 test case(s) completed on: 39
+INFO 2020-01-24 05:04:09,687 judgehandler judge1: 7 test case(s) completed on: 39
+INFO 2020-01-24 05:04:09,937 judgehandler judge1: 7 test case(s) completed on: 39
+INFO 2020-01-24 05:04:10,188 judgehandler judge1: 7 test case(s) completed on: 39
+INFO 2020-01-24 05:04:10,439 judgehandler judge1: 8 test case(s) completed on: 39
+INFO 2020-01-24 05:04:11,345 judgehandler judge1: 5 test case(s) completed on: 39
+INFO 2020-01-24 05:04:11,658 judgehandler judge1: 1 test case(s) completed on: 39
+INFO 2020-01-24 05:04:11,836 judgehandler judge1: 7 test case(s) completed on: 39
+INFO 2020-01-24 05:04:12,014 judgehandler judge1: 3 test case(s) completed on: 39
+INFO 2020-01-24 05:04:12,128 judgehandler judge1: Grading has ended on: 39
+INFO 2020-01-24 05:04:12,128 judgelist Judge available after grading 39: judge1
+INFO 2020-01-24 05:24:11,841 judgehandler judge1: Updated problem list
+INFO 2020-01-24 05:24:14,084 judgehandler judge1: Updated problem list
+INFO 2020-01-24 05:35:10,473 judgehandler judge1: Updated problem list
+INFO 2020-01-24 05:35:30,120 judgehandler judge1: Updated problem list
+INFO 2020-01-24 05:36:00,928 judgelist Free judges: 1
+INFO 2020-01-24 05:36:00,928 judgelist Dispatched submission 41 to: judge1
+INFO 2020-01-24 05:36:00,944 judgehandler Submission acknowledged: 41
+INFO 2020-01-24 05:36:00,984 judgehandler judge1: Grading has begun on: 41
+INFO 2020-01-24 05:36:01,275 judgehandler judge1: 8 test case(s) completed on: 41
+INFO 2020-01-24 05:36:01,526 judgehandler judge1: 6 test case(s) completed on: 41
+INFO 2020-01-24 05:36:01,777 judgehandler judge1: 8 test case(s) completed on: 41
+INFO 2020-01-24 05:36:02,027 judgehandler judge1: 7 test case(s) completed on: 41
+INFO 2020-01-24 05:36:02,113 judgehandler judge1: 1 test case(s) completed on: 41
+INFO 2020-01-24 05:36:02,206 judgehandler judge1: Grading has ended on: 41
+INFO 2020-01-24 05:36:02,206 judgelist Judge available after grading 41: judge1
+INFO 2020-01-26 05:15:24,961 judgehandler Judge connected from: ('127.0.0.1', 34940)
+INFO 2020-01-26 05:15:24,983 judgehandler Judge authenticated: ('127.0.0.1', 34940) (judge1)
+INFO 2020-01-26 05:15:28,838 judgelist Free judges: 1
+INFO 2020-01-26 05:15:28,840 judgelist Dispatched submission 42 to: judge1
+INFO 2020-01-26 05:15:28,861 judgehandler Submission acknowledged: 42
+INFO 2020-01-26 05:15:28,948 judgehandler judge1: Grading has begun on: 42
+INFO 2020-01-26 05:15:29,162 judgehandler judge1: 6 test case(s) completed on: 42
+INFO 2020-01-26 05:15:29,413 judgehandler judge1: 7 test case(s) completed on: 42
+INFO 2020-01-26 05:15:29,663 judgehandler judge1: 7 test case(s) completed on: 42
+INFO 2020-01-26 05:15:29,915 judgehandler judge1: 8 test case(s) completed on: 42
+INFO 2020-01-26 05:15:30,166 judgehandler judge1: 7 test case(s) completed on: 42
+INFO 2020-01-26 05:15:30,416 judgehandler judge1: 7 test case(s) completed on: 42
+INFO 2020-01-26 05:15:30,667 judgehandler judge1: 7 test case(s) completed on: 42
+INFO 2020-01-26 05:15:30,918 judgehandler judge1: 8 test case(s) completed on: 42
+INFO 2020-01-26 05:15:31,170 judgehandler judge1: 5 test case(s) completed on: 42
+INFO 2020-01-26 05:15:32,176 judgehandler judge1: 1 test case(s) completed on: 42
+INFO 2020-01-26 05:15:32,608 judgehandler judge1: 2 test case(s) completed on: 42
+INFO 2020-01-26 05:15:32,731 judgehandler judge1: 2 test case(s) completed on: 42
+INFO 2020-01-26 05:15:32,800 judgehandler judge1: 2 test case(s) completed on: 42
+INFO 2020-01-26 05:15:32,869 judgehandler judge1: 2 test case(s) completed on: 42
+INFO 2020-01-26 05:15:33,824 judgehandler judge1: 1 test case(s) completed on: 42
+INFO 2020-01-26 05:15:34,409 judgehandler judge1: 7 test case(s) completed on: 42
+INFO 2020-01-26 05:15:34,807 judgehandler judge1: 3 test case(s) completed on: 42
+INFO 2020-01-26 05:15:34,911 judgehandler judge1: 2 test case(s) completed on: 42
+INFO 2020-01-26 05:15:34,986 judgehandler judge1: 1 test case(s) completed on: 42
+INFO 2020-01-26 05:15:35,061 judgehandler judge1: 2 test case(s) completed on: 42
+INFO 2020-01-26 05:15:35,156 judgehandler judge1: 2 test case(s) completed on: 42
+INFO 2020-01-26 05:15:35,249 judgehandler judge1: 1 test case(s) completed on: 42
+INFO 2020-01-26 05:15:35,343 judgehandler judge1: 2 test case(s) completed on: 42
+INFO 2020-01-26 05:15:35,436 judgehandler judge1: 5 test case(s) completed on: 42
+INFO 2020-01-26 05:15:35,531 judgehandler judge1: 3 test case(s) completed on: 42
+INFO 2020-01-26 05:15:35,729 judgehandler judge1: Grading has ended on: 42
+INFO 2020-01-26 05:15:35,729 judgelist Judge available after grading 42: judge1
diff --git a/dmoj/settings.py b/dmoj/settings.py
index 424224e..c875af5 100644
--- a/dmoj/settings.py
+++ b/dmoj/settings.py
@@ -497,3 +497,6 @@ except IOError:
     pass
 
 TESTCASE_VISIBLE_LENGTH = 60
+
+DATA_UPLOAD_MAX_NUMBER_FIELDS = 10240
+DATA_UPLOAD_MAX_MEMORY_SIZE = 2621440
diff --git a/dmoj/urls.py b/dmoj/urls.py
index c56ed27..0e75997 100644
--- a/dmoj/urls.py
+++ b/dmoj/urls.py
@@ -17,6 +17,7 @@ from judge.sitemap import BlogPostSitemap, ContestSitemap, HomePageSitemap, Orga
 from judge.views import TitledTemplateView, api, blog, comment, contests, language, license, mailgun, organization, \
     preview, problem, problem_manage, ranked_submission, register, stats, status, submission, tasks, ticket, totp, \
     user, widgets
+from judge.views.about import about, custom_checker_sample
 from judge.views.problem_data import ProblemDataView, ProblemSubmissionDiff, \
     problem_data_file, problem_init_view
 from judge.views.register import ActivationView, RegistrationView
@@ -162,7 +163,7 @@ urlpatterns = [
     url(r'^users/', include([
         url(r'^$', user.users, name='user_list'),
         url(r'^(?P<page>\d+)$', lambda request, page:
-            HttpResponsePermanentRedirect('%s?page=%s' % (reverse('user_list'), page))),
+         uncommitted   HttpResponsePermanentRedirect('%s?page=%s' % (reverse('user_list'), page))),
         url(r'^find$', user.user_ranking_redirect, name='user_ranking_redirect'),
     ])),
 
@@ -360,6 +361,10 @@ urlpatterns = [
         url(r'^failure$', tasks.demo_failure),
         url(r'^progress$', tasks.demo_progress),
     ])),
+
+    url(r'^about/', about, name='about'),
+
+    url(r'^custom_checker_sample', custom_checker_sample, name='custom_checker_sample'),
 ]
 
 favicon_paths = ['apple-touch-icon-180x180.png', 'apple-touch-icon-114x114.png', 'android-chrome-72x72.png',
diff --git a/judge/views/about.py b/judge/views/about.py
new file mode 100644
index 0000000..d328066
--- /dev/null
+++ b/judge/views/about.py
@@ -0,0 +1,14 @@
+from django.shortcuts import render
+from django.utils.translation import gettext as _
+
+
+def about(request):
+    return render(request, 'about/about.html', {
+        'title': _('About'),
+    })
+
+
+def custom_checker_sample(request):
+    return render(request, 'about/custom-checker-sample.html', {
+        'title': _('Custom Checker Sample'),
+    })
diff --git a/templates/about/about.html b/templates/about/about.html
new file mode 100644
index 0000000..70b97b9
--- /dev/null
+++ b/templates/about/about.html
@@ -0,0 +1,7 @@
+{% extends "base.html" %}
+
+{% block body %}
+    <p style="font-size:40px;">
+        I am <b><a href="https://codeforces.com/profile/cuom1999" style="color:red;" target="_blank">cuom1999</a></b>.
+    </p>
+{% endblock %}
\ No newline at end of file
diff --git a/templates/about/custom-checker-sample.html b/templates/about/custom-checker-sample.html
new file mode 100644
index 0000000..a2a74da
--- /dev/null
+++ b/templates/about/custom-checker-sample.html
@@ -0,0 +1,1106 @@
+{% extends "base.html" %}
+
+{% block body %}
+    <!DOCTYPE html><html><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1"><style>body {
+  max-width: 980px;
+  border: 1px solid #ddd;
+  outline: 1300px solid #fff;
+  margin: 16px auto;
+}
+
+body .markdown-body
+{
+  padding: 45px;
+}
+
+@font-face {
+  font-family: fontawesome-mini;
+  src: url(data:font/woff;charset=utf-8;base64,d09GRgABAAAAABE0AA8AAAAAHWwAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAABHU1VCAAABWAAAADsAAABUIIslek9TLzIAAAGUAAAAQwAAAFY3d1HZY21hcAAAAdgAAACqAAACOvWLi0FjdnQgAAAChAAAABMAAAAgBtX/BGZwZ20AAAKYAAAFkAAAC3CKkZBZZ2FzcAAACCgAAAAIAAAACAAAABBnbHlmAAAIMAAABdQAAAjkYT9TNWhlYWQAAA4EAAAAMwAAADYQ6WvNaGhlYQAADjgAAAAfAAAAJAc6A1pobXR4AAAOWAAAACAAAAA0Kmz/7mxvY2EAAA54AAAAHAAAABwQPBJubWF4cAAADpQAAAAgAAAAIAEHC/NuYW1lAAAOtAAAAYQAAALxhQT4h3Bvc3QAABA4AAAAfgAAAMS3SYh9cHJlcAAAELgAAAB6AAAAhuVBK7x4nGNgZGBg4GIwYLBjYHJx8wlh4MtJLMljkGJgYYAAkDwymzEnMz2RgQPGA8qxgGkOIGaDiAIAJjsFSAB4nGNgZHZmnMDAysDAVMW0h4GBoQdCMz5gMGRkAooysDIzYAUBaa4pDA4Pwz+yMwf9z2KIYg5imAYUZgTJAQDcoQvQAHic7ZHNDYJAFIRnBXf94cDRIiyCKkCpwFCPJ092RcKNDoYKcN4+EmMPvpdvk539zQyAPYBCXEUJhBcCrJ5SQ9YLnLJe4qF5rdb+uWPDngNHTkta101pNyWa8lMhn6xx2dqUnW4q9YOIhAOOeueMSgsR/6ry+P7O5s6xVNg4chBsHUuFnWNJ8uZYwrw7chrsHXkODo7cB0dHOYCTY8kv0VE2WJKD6gOlWjsxAAB4nGNgQAMSEMgc9D8LhAESbAPdAHicrVZpd9NGFB15SZyELCULLWphxMRpsEYmbMGACUGyYyBdnK2VoIsUO+m+8Ynf4F/zZNpz6Dd+Wu8bLySQtOdwmpOjd+fN1czbZRJaktgL65GUmy/F1NYmjew8CemGTctRfCg7eyFlisnfBVEQrZbatx2HREQiULWusEQQ+x5ZmmR86FFGy7akV03KLT3pLlvjQb1V334aOsqxO6GkZjN0aD2yJVUYVaJIpj1S0qZlqPorSSu8v8LMV81QwohOImm8GcbQSN4bZ7TKaDW24yiKbLLcKFIkmuFBFHmU1RLn5IoJDMoHzZDyyqcR5cP8iKzYo5xWsEu20/y+L3mndzk/sV9vUbbkQB/Ijuzg7HQlX4RbW2HctJPtKFQRdtd3QmzZ7FT/Zo/ymkYDtysyvdCMYKl8hRArP6HM/iFZLZxP+ZJHo1qykRNB62VO7Es+gdbjiClxzRhZ0N3RCRHU/ZIzDPaYPh788d4plgsTAngcy3pHJZwIEylhczRJ2jByYCVliyqp9a6YOOV1WsRbwn7t2tGXzmjjUHdiPFsPHVs5UcnxaFKnmUyd2knNoykNopR0JnjMrwMoP6JJXm1jNYmVR9M4ZsaERCICLdxLU0EsO7GkKQTNoxm9uRumuXYtWqTJA/Xco/f05la4udNT2g70s0Z/VqdiOtgL0+lp5C/xadrlIkXp+ukZfkziQdYCMpEtNsOUgwdv/Q7Sy9eWHIXXBtju7fMrqH3WRPCkAfsb0B5P1SkJTIWYVYhWQGKta1mWydWsFqnI1HdDmla+rNMEinIcF8e+jHH9XzMzlpgSvt+J07MjLj1z7UsI0xx8m3U9mtepxXIBcWZ5TqdZlu/rNMfyA53mWZ7X6QhLW6ejLD/UaYHlRzodY3lBC5p038GQizDkAg6QMISlA0NYXoIhLBUMYbkIQ1gWYQjLJRjC8mMYwnIZhrC8rGXV1FNJ49qZWAZsQmBijh65zEXlaiq5VEK7aFRqQ54SbpVUFM+qf2WgXjzyhjmwFkiXyJpfMc6Vj0bl+NYVLW8aO1fAsepvH472OfFS1ouFPwX/1dZUJb1izcOTq/Abhp5sJ6o2qXh0TZfPVT26/l9UVFgL9BtIhVgoyrJscGcihI86nYZqoJVDzGzMPLTrdcuan8P9NzFCFlD9+DcUGgvcg05ZSVnt4KzV19uy3DuDcjgTLEkxN/P6VvgiI7PSfpFZyp6PfB5wBYxKZdhqA60VvNknMQ+Z3iTPBHFbUTZI2tjOBIkNHPOAefOdBCZh6qoN5E7hhg34BWFuwXknXKJ6oyyH7kXs8yik/Fun4kT2qGiMwLPZG2Gv70LKb3EMJDT5pX4MVBWhqRg1FdA0Um6oBl/G2bptQsYO9CMqdsOyrOLDxxb3lZJtGYR8pIjVo6Of1l6iTqrcfmYUl++dvgXBIDUxf3vfdHGQyrtayTJHbQNTtxqVU9eaQ+NVh+rmUfW94+wTOWuabronHnpf06rbwcVcLLD2bQ7SUiYX1PVhhQ2iy8WlUOplNEnvuAcYFhjQ71CKjf+r+th8nitVhdFxJN9O1LfR52AM/A/Yf0f1A9D3Y+hyDS7P95oTn2704WyZrqIX66foNzBrrblZugbc0HQD4iFHrY64yg18pwZxeqS5HOkh4GPdFeIBwCaAxeAT3bWM5lMAo/mMOT7A58xh0GQOgy3mMNhmzhrADnMY7DKHwR5zGHzBnHWAL5nDIGQOg4g5DJ4wJwB4yhwGXzGHwdfMYfANc+4DfMscBjFzGCTMYbCv6dYwzC1e0F2gtkFVoANTT1jcw+JQU2XI/o4Xhv29Qcz+wSCm/qjp9pD6Ey8M9WeDmPqLQUz9VdOdIfU3Xhjq7wYx9Q+DmPpMvxjLZQa/jHyXCgeUXWw+5++J9w/bxUC5AAEAAf//AA94nIVVX2hbZRQ/5/t7893s5ja9f7ouzdZ0TTqz3bRJmogbWya6bG6Cq0VbSV2ddIJjFtfIQHEig80Hda8yUN/0YQz8AyriiyD+xQd92R4HCnaCb3samnpumrpsCsLlfPf7zvedc37nL3CAtc/5W/wQZGA3tOBSY/g+TMjHmwzEoM1Q8+ZjRZY4oJhmBw5/YB6Za0yC5AkhlwA1A1yCBIBOwCII0Cj0U8BAMdUCzq05sKwkP7SlUY6fcJk4Fb/RyE79/6P5hjM/F4aZiXBoeMgzcqQ4Xi1hPqfDLG5FT+lchCVU3lYMyvuwhl1mqndQL0RsuloLywHtthLXI06OblTrhfWVnpSJ5+mwu/JdbtuN3IAnkW0LLMcRwaC7ktrlzridM6kVdyf9uO1UNBByI7JhwtG2sEwab07ORBeilWhqavJCqV0qzZTOl/7ZXQ5TbTcdcFelyGhhRDAQpdqp1FEX3w3cFTc1k9pJQkmm4ySCbSikxRP2QOfN+0tHS5MrpQuTU1Mk5nw0E5Xa0WvrOwDyGax9yB9ma6DAg82wHc43SAGTI4GjBWebOePAERFE8/AHaQpZASSTy8A4WwZiLQMQ82mFKATO0ILicRAoDm9p5P99E5b/fXG+kQYY3TYUuqmERWYoT0u/GNYL2q/4WB3LaVS+VynXsVYIcWw6DkCh3nX1D+VzlYN4LClF5yexSQos8exqZ3KVP+wtrC54u4Nznq6cq+xpMpUUnZ8FUYzE86ud0g28NOIv3Gj5/rmA3ABs7S/ywzFuQ4qyd6QxfNtiQIaEgp3w/entQg4Vcbqa16M5FfpeUB8t1+qeg7mI7cUyOe79wOk86gSxkVec4KPTX69++5x68Yubn5/F+w52z7u08sJX7fZXv8ekT/d2mILJxq6sn+SC6qEJknzLJCxyZEKwWVqYmAPBxBE/9DLeZiWHu7lcr/VytrCRuHojncNuTt9h46tmacmYisnSamdN2bZptcsmSysdVsy1PrOvOzF3xN64Rb937t/og9KHxYdcjIUqFAmIAHGHNzlns+RTPgeUYAQm9DwpNxfxbhhBHPaw3/gfTcXO2L+eJVIx5nsyGkvm9X4/f+bGkH45G0PaSjcMXTjcZyTvi3UdHoCDjQd3IDUVsgwYmUoJK/gp4JJxeRI0MKHZIkgynyIBqBTOUs6rOVCojvjZ4mCQz49ZMlMcp8QoYk6NoBfsxnJtsBohpa8iGJS+ZH7gU7NxME6cmF+t7cO9vB8d3jTWSct0ycW9ranXmolNDwmVkNnxe+8JtoztwS5rKJ0xWS95tQ/1zMYzg69MzUZnNtl1ofNbsml/OJm6f9wjRjpnu2o4MzHzn77IQkRd+1DjwMQ2pqSjGMMhyjrgTbBAKksuUm0iU7hI0aN2wOKOq7WYBSH0HGihj/jkiPxAfmwsEbfYrjMG+j3ij932Db/LV7I/xruNrhnroxjR9HRMb2nTvO0ZXOoHPk8H2ZhDPx93qcE/53sH5np/dkIP7zzhTVKdR/BAY/9ElkkR+A6lJGsqpJ4oQcTxpvBT3Kn58VkaJjgHyPEIws57xkaHh9KuVpDEpJZeMbZ5w/zBHi5NMQ4r5VphsFqID7TyB9eR4pX216c3AHxpdAwoqU9qg0ZJ6yVLKmMSz1iG2z27ifx18NkY0LPx1W/wCc2l5LrznrIsiKsqbmB78A9wIGx4tI8rjihVHJyY9pgMirenVq0yWg7Iw7eogG7ZgYM3qR9959A/fZkg6MnD/exlkmc+jWV4SB15XUR+eqC6l6ZmgPtN9z5JMfik05OV8ljylunJ4J+wA/FUaQSSKotsYsCWqaPBidBLcxkWx7XKFRIb45TGaEhjlF9uUVPqXOtcIwsXbBvfoZXIyRYFdkfnqjExH98xpnPczqzjX/uNdO1Y17Wpi5+6Ts8BXtjVFasp9KZ1mOiNbH65c5w6HgmyF2jFCZywM8mWjRc7T5Pmt0lRy7Y71+jYbpGyvwG4sH0XeJxjYGRgYADiwBB/53h+m68M3MwvgCIM1z5N/g6j///9v5H5BbMnkMvBwAQSBQCIcA9gAHicY2BkYGAO+p8FJF/8//v/F/MLBqAICuAFALYQB5kAeJxjfsHAwLwAiCNB+P9fbJjJmoGBMRUo/wKCAfO2EnQAAAAAANoBXgGcAgICVALaA1IDvAPkBAYEPARyAAEAAAANAF0ABAAAAAAAAgAUACQAcwAAAG4LcAAAAAB4nHWRzWrCQBSFT+pPqUIXLXTTzayKUohGKIibCoLuhbrrYtTRxCYZmYyKyz5Fd32HvlDfoO/QkziIFJtw9bvnnpl7ZwLgBt/wcHieGAf2UGd24Atcou+4RH3kuEweO66QXx1XyaHjGh6ROa7jFp/cwStfMVvhy7GHO+/e8QWuvcBxifqz4zL5xXGF/Oa4Sn53XMPE+3Bcx4P3M9DrvYmWoRWNQVN02kFXTPdCU4pSGQu5saE2meiLhU6timPtz3SSs9ypTCdqrJabWJoT5QQnymSRTkXgt0/UkUqVkVbN807ZdtmxdiEWRidi6HqItdErNbN+aO2612qd9sYAGmvsYRBhyUu0EGhQbfK/gzYCdElTOgSdB1eEFBIxFYkNV4RFJWPeZyyYpVQVHTHZx4y/yVGX2LGWFZri51TccUOn5B7nPefVCSPvGhVVwUl9znveO2KkhV8Wk82PZ8qwZf8OVcu1+fSmWCMw/HMOwXvKaysqM+p+cVuWag8tvv+c+xdd+4+teJxtjUEOwiAURJla24KliQfhUA2g/Sl+CKXx+loNrpzVezOLEY34Ron/0WhwQoszOvQYIKFwwQiNSbSBeO2SZ0tBP4j3zVjKNng32ZmtD1VVXCuOiw/pJ8S3WOU6l+K5UOTaDC4+2TjKMtN9KQf1ezLx/Sg/00FCvABHhjDjAAB4nGPw3sFwIihiIyNjX+QGxp0cDBwMyQUbGVidNjEwMmiBGJu5mBg5ICw+BjCLzWkX0wGgNCeQze60i8EBwmZmcNmowtgRGLHBoSNiI3OKy0Y1EG8XRwMDI4tDR3JIBEhJJBBs5mFi5NHawfi/dQNL70YmBhcADHYj9AAA) format('woff');
+}
+
+.markdown-body {
+  font-family: sans-serif;
+  -ms-text-size-adjust: 100%;
+  -webkit-text-size-adjust: 100%;
+  color: #333333;
+  overflow: hidden;
+  font-family: "Helvetica Neue", Helvetica, "Segoe UI", Arial, freesans, sans-serif;
+  font-size: 16px;
+  line-height: 1.6;
+  word-wrap: break-word;
+}
+
+.markdown-body a {
+  background: transparent;
+}
+
+.markdown-body a:active,
+.markdown-body a:hover {
+  outline: 0;
+}
+
+.markdown-body b,
+.markdown-body strong {
+  font-weight: bold;
+}
+
+.markdown-body mark {
+  background: #ff0;
+  color: #000;
+  font-style: italic;
+  font-weight: bold;
+}
+
+.markdown-body sub,
+.markdown-body sup {
+  font-size: 75%;
+  line-height: 0;
+  position: relative;
+  vertical-align: baseline;
+}
+.markdown-body sup {
+  top: -0.5em;
+}
+.markdown-body sub {
+  bottom: -0.25em;
+}
+
+.markdown-body h1 {
+  font-size: 2em;
+  margin: 0.67em 0;
+}
+
+.markdown-body img {
+  border: 0;
+}
+
+.markdown-body hr {
+  -moz-box-sizing: content-box;
+  box-sizing: content-box;
+  height: 0;
+}
+
+.markdown-body pre {
+  overflow: auto;
+}
+
+.markdown-body code,
+.markdown-body kbd,
+.markdown-body pre,
+.markdown-body samp {
+  font-family: monospace, monospace;
+  font-size: 1em;
+}
+
+.markdown-body input {
+  color: inherit;
+  font: inherit;
+  margin: 0;
+}
+
+.markdown-body html input[disabled] {
+  cursor: default;
+}
+
+.markdown-body input {
+  line-height: normal;
+}
+
+.markdown-body input[type="checkbox"] {
+  box-sizing: border-box;
+  padding: 0;
+}
+
+.markdown-body table {
+  border-collapse: collapse;
+  border-spacing: 0;
+}
+
+.markdown-body td,
+.markdown-body th {
+  padding: 0;
+}
+
+.markdown-body .codehilitetable {
+  border: 0;
+  border-spacing: 0;
+}
+
+.markdown-body .codehilitetable tr {
+  border: 0;
+}
+
+.markdown-body .codehilitetable pre,
+.markdown-body .codehilitetable div.codehilite {
+  margin: 0;
+}
+
+.markdown-body .linenos,
+.markdown-body .code,
+.markdown-body .codehilitetable td {
+  border: 0;
+  padding: 0;
+}
+
+.markdown-body td:not(.linenos) .linenodiv {
+  padding: 0 !important;
+}
+
+.markdown-body .code {
+  width: 100%;
+}
+
+.markdown-body .linenos div pre,
+.markdown-body .linenodiv pre,
+.markdown-body .linenodiv {
+  border: 0;
+  -webkit-border-radius: 0;
+  -moz-border-radius: 0;
+  border-radius: 0;
+  -webkit-border-top-left-radius: 3px;
+  -webkit-border-bottom-left-radius: 3px;
+  -moz-border-radius-topleft: 3px;
+  -moz-border-radius-bottomleft: 3px;
+  border-top-left-radius: 3px;
+  border-bottom-left-radius: 3px;
+}
+
+.markdown-body .code div pre,
+.markdown-body .code div {
+  border: 0;
+  -webkit-border-radius: 0;
+  -moz-border-radius: 0;
+  border-radius: 0;
+  -webkit-border-top-right-radius: 3px;
+  -webkit-border-bottom-right-radius: 3px;
+  -moz-border-radius-topright: 3px;
+  -moz-border-radius-bottomright: 3px;
+  border-top-right-radius: 3px;
+  border-bottom-right-radius: 3px;
+}
+
+.markdown-body * {
+  -moz-box-sizing: border-box;
+  box-sizing: border-box;
+}
+
+.markdown-body input {
+  font: 13px Helvetica, arial, freesans, clean, sans-serif, "Segoe UI Emoji", "Segoe UI Symbol";
+  line-height: 1.4;
+}
+
+.markdown-body a {
+  color: #4183c4;
+  text-decoration: none;
+}
+
+.markdown-body a:hover,
+.markdown-body a:focus,
+.markdown-body a:active {
+  text-decoration: underline;
+}
+
+.markdown-body hr {
+  height: 0;
+  margin: 15px 0;
+  overflow: hidden;
+  background: transparent;
+  border: 0;
+  border-bottom: 1px solid #ddd;
+}
+
+.markdown-body hr:before,
+.markdown-body hr:after {
+  display: table;
+  content: " ";
+}
+
+.markdown-body hr:after {
+  clear: both;
+}
+
+.markdown-body h1,
+.markdown-body h2,
+.markdown-body h3,
+.markdown-body h4,
+.markdown-body h5,
+.markdown-body h6 {
+  margin-top: 15px;
+  margin-bottom: 15px;
+  line-height: 1.1;
+}
+
+.markdown-body h1 {
+  font-size: 30px;
+}
+
+.markdown-body h2 {
+  font-size: 21px;
+}
+
+.markdown-body h3 {
+  font-size: 16px;
+}
+
+.markdown-body h4 {
+  font-size: 14px;
+}
+
+.markdown-body h5 {
+  font-size: 12px;
+}
+
+.markdown-body h6 {
+  font-size: 11px;
+}
+
+.markdown-body blockquote {
+  margin: 0;
+}
+
+.markdown-body ul,
+.markdown-body ol {
+  padding: 0;
+  margin-top: 0;
+  margin-bottom: 0;
+}
+
+.markdown-body ol ol,
+.markdown-body ul ol {
+  list-style-type: lower-roman;
+}
+
+.markdown-body ul ul ol,
+.markdown-body ul ol ol,
+.markdown-body ol ul ol,
+.markdown-body ol ol ol {
+  list-style-type: lower-alpha;
+}
+
+.markdown-body dd {
+  margin-left: 0;
+}
+
+.markdown-body code,
+.markdown-body pre,
+.markdown-body samp {
+  font-family: Consolas, "Liberation Mono", Menlo, Courier, monospace;
+  font-size: 12px;
+}
+
+.markdown-body pre {
+  margin-top: 0;
+  margin-bottom: 0;
+}
+
+.markdown-body kbd {
+  background-color: #e7e7e7;
+  background-image: -moz-linear-gradient(#fefefe, #e7e7e7);
+  background-image: -webkit-linear-gradient(#fefefe, #e7e7e7);
+  background-image: linear-gradient(#fefefe, #e7e7e7);
+  background-repeat: repeat-x;
+  border-radius: 2px;
+  border: 1px solid #cfcfcf;
+  color: #000;
+  padding: 3px 5px;
+  line-height: 10px;
+  font: 11px Consolas, "Liberation Mono", Menlo, Courier, monospace;
+  display: inline-block;
+}
+
+.markdown-body>*:first-child {
+  margin-top: 0 !important;
+}
+
+.markdown-body>*:last-child {
+  margin-bottom: 0 !important;
+}
+
+.markdown-body .headerlink {
+  font: normal 400 16px fontawesome-mini;
+  vertical-align: middle;
+  margin-left: -16px;
+  float: left;
+  display: inline-block;
+  text-decoration: none;
+  opacity: 0;
+  color: #333;
+}
+
+.markdown-body .headerlink:focus {
+  outline: none;
+}
+
+.markdown-body h1 .headerlink {
+  margin-top: 0.8rem;
+}
+
+.markdown-body h2 .headerlink,
+.markdown-body h3 .headerlink {
+  margin-top: 0.6rem;
+}
+
+.markdown-body h4 .headerlink {
+  margin-top: 0.2rem;
+}
+
+.markdown-body h5 .headerlink,
+.markdown-body h6 .headerlink {
+  margin-top: 0;
+}
+
+.markdown-body .headerlink:hover,
+.markdown-body h1:hover .headerlink,
+.markdown-body h2:hover .headerlink,
+.markdown-body h3:hover .headerlink,
+.markdown-body h4:hover .headerlink,
+.markdown-body h5:hover .headerlink,
+.markdown-body h6:hover .headerlink {
+  opacity: 1;
+  text-decoration: none;
+}
+
+.markdown-body h1 {
+  padding-bottom: 0.3em;
+  font-size: 2.25em;
+  line-height: 1.2;
+  border-bottom: 1px solid #eee;
+}
+
+.markdown-body h2 {
+  padding-bottom: 0.3em;
+  font-size: 1.75em;
+  line-height: 1.225;
+  border-bottom: 1px solid #eee;
+}
+
+.markdown-body h3 {
+  font-size: 1.5em;
+  line-height: 1.43;
+}
+
+.markdown-body h4 {
+  font-size: 1.25em;
+}
+
+.markdown-body h5 {
+  font-size: 1em;
+}
+
+.markdown-body h6 {
+  font-size: 1em;
+  color: #777;
+}
+
+.markdown-body p,
+.markdown-body blockquote,
+.markdown-body ul,
+.markdown-body ol,
+.markdown-body dl,
+.markdown-body table,
+.markdown-body pre,
+.markdown-body .admonition {
+  margin-top: 0;
+  margin-bottom: 16px;
+}
+
+.markdown-body hr {
+  height: 4px;
+  padding: 0;
+  margin: 16px 0;
+  background-color: #e7e7e7;
+  border: 0 none;
+}
+
+.markdown-body ul,
+.markdown-body ol {
+  padding-left: 2em;
+}
+
+.markdown-body ul ul,
+.markdown-body ul ol,
+.markdown-body ol ol,
+.markdown-body ol ul {
+  margin-top: 0;
+  margin-bottom: 0;
+}
+
+.markdown-body li>p {
+  margin-top: 16px;
+}
+
+.markdown-body dl {
+  padding: 0;
+}
+
+.markdown-body dl dt {
+  padding: 0;
+  margin-top: 16px;
+  font-size: 1em;
+  font-style: italic;
+  font-weight: bold;
+}
+
+.markdown-body dl dd {
+  padding: 0 16px;
+  margin-bottom: 16px;
+}
+
+.markdown-body blockquote {
+  padding: 0 15px;
+  color: #777;
+  border-left: 4px solid #ddd;
+}
+
+.markdown-body blockquote>:first-child {
+  margin-top: 0;
+}
+
+.markdown-body blockquote>:last-child {
+  margin-bottom: 0;
+}
+
+.markdown-body table {
+  display: block;
+  width: 100%;
+  overflow: auto;
+  word-break: normal;
+  word-break: keep-all;
+}
+
+.markdown-body table th {
+  font-weight: bold;
+}
+
+.markdown-body table th,
+.markdown-body table td {
+  padding: 6px 13px;
+  border: 1px solid #ddd;
+}
+
+.markdown-body table tr {
+  background-color: #fff;
+  border-top: 1px solid #ccc;
+}
+
+.markdown-body table tr:nth-child(2n) {
+  background-color: #f8f8f8;
+}
+
+.markdown-body img {
+  max-width: 100%;
+  -moz-box-sizing: border-box;
+  box-sizing: border-box;
+}
+
+.markdown-body code,
+.markdown-body samp {
+  padding: 0;
+  padding-top: 0.2em;
+  padding-bottom: 0.2em;
+  margin: 0;
+  font-size: 85%;
+  background-color: rgba(0,0,0,0.04);
+  border-radius: 3px;
+}
+
+.markdown-body code:before,
+.markdown-body code:after {
+  letter-spacing: -0.2em;
+  content: "\00a0";
+}
+
+.markdown-body pre>code {
+  padding: 0;
+  margin: 0;
+  font-size: 100%;
+  word-break: normal;
+  white-space: pre;
+  background: transparent;
+  border: 0;
+}
+
+.markdown-body .codehilite {
+  margin-bottom: 16px;
+}
+
+.markdown-body .codehilite pre,
+.markdown-body pre {
+  padding: 16px;
+  overflow: auto;
+  font-size: 85%;
+  line-height: 1.45;
+  background-color: #f7f7f7;
+  border-radius: 3px;
+}
+
+.markdown-body .codehilite pre {
+  margin-bottom: 0;
+  word-break: normal;
+}
+
+.markdown-body pre {
+  word-wrap: normal;
+}
+
+.markdown-body pre code {
+  display: inline;
+  max-width: initial;
+  padding: 0;
+  margin: 0;
+  overflow: initial;
+  line-height: inherit;
+  word-wrap: normal;
+  background-color: transparent;
+  border: 0;
+}
+
+.markdown-body pre code:before,
+.markdown-body pre code:after {
+  content: normal;
+}
+
+/* Admonition */
+.markdown-body .admonition {
+  -webkit-border-radius: 3px;
+  -moz-border-radius: 3px;
+  position: relative;
+  border-radius: 3px;
+  border: 1px solid #e0e0e0;
+  border-left: 6px solid #333;
+  padding: 10px 10px 10px 30px;
+}
+
+.markdown-body .admonition table {
+  color: #333;
+}
+
+.markdown-body .admonition p {
+  padding: 0;
+}
+
+.markdown-body .admonition-title {
+  font-weight: bold;
+  margin: 0;
+}
+
+.markdown-body .admonition>.admonition-title {
+  color: #333;
+}
+
+.markdown-body .attention>.admonition-title {
+  color: #a6d796;
+}
+
+.markdown-body .caution>.admonition-title {
+  color: #d7a796;
+}
+
+.markdown-body .hint>.admonition-title {
+  color: #96c6d7;
+}
+
+.markdown-body .danger>.admonition-title {
+  color: #c25f77;
+}
+
+.markdown-body .question>.admonition-title {
+  color: #96a6d7;
+}
+
+.markdown-body .note>.admonition-title {
+  color: #d7c896;
+}
+
+.markdown-body .admonition:before,
+.markdown-body .attention:before,
+.markdown-body .caution:before,
+.markdown-body .hint:before,
+.markdown-body .danger:before,
+.markdown-body .question:before,
+.markdown-body .note:before {
+  font: normal normal 16px fontawesome-mini;
+  -moz-osx-font-smoothing: grayscale;
+  -webkit-user-select: none;
+  -moz-user-select: none;
+  -ms-user-select: none;
+  user-select: none;
+  line-height: 1.5;
+  color: #333;
+  position: absolute;
+  left: 0;
+  top: 0;
+  padding-top: 10px;
+  padding-left: 10px;
+}
+
+.markdown-body .admonition:before {
+  content: "\f056\00a0";
+  color: 333;
+}
+
+.markdown-body .attention:before {
+  content: "\f058\00a0";
+  color: #a6d796;
+}
+
+.markdown-body .caution:before {
+  content: "\f06a\00a0";
+  color: #d7a796;
+}
+
+.markdown-body .hint:before {
+  content: "\f05a\00a0";
+  color: #96c6d7;
+}
+
+.markdown-body .danger:before {
+  content: "\f057\00a0";
+  color: #c25f77;
+}
+
+.markdown-body .question:before {
+  content: "\f059\00a0";
+  color: #96a6d7;
+}
+
+.markdown-body .note:before {
+  content: "\f040\00a0";
+  color: #d7c896;
+}
+
+.markdown-body .admonition::after {
+  content: normal;
+}
+
+.markdown-body .attention {
+  border-left: 6px solid #a6d796;
+}
+
+.markdown-body .caution {
+  border-left: 6px solid #d7a796;
+}
+
+.markdown-body .hint {
+  border-left: 6px solid #96c6d7;
+}
+
+.markdown-body .danger {
+  border-left: 6px solid #c25f77;
+}
+
+.markdown-body .question {
+  border-left: 6px solid #96a6d7;
+}
+
+.markdown-body .note {
+  border-left: 6px solid #d7c896;
+}
+
+.markdown-body .admonition>*:first-child {
+  margin-top: 0 !important;
+}
+
+.markdown-body .admonition>*:last-child {
+  margin-bottom: 0 !important;
+}
+
+/* progress bar*/
+.markdown-body .progress {
+  display: block;
+  width: 300px;
+  margin: 10px 0;
+  height: 24px;
+  -webkit-border-radius: 3px;
+  -moz-border-radius: 3px;
+  border-radius: 3px;
+  background-color: #ededed;
+  position: relative;
+  box-shadow: inset -1px 1px 3px rgba(0, 0, 0, .1);
+}
+
+.markdown-body .progress-label {
+  position: absolute;
+  text-align: center;
+  font-weight: bold;
+  width: 100%; margin: 0;
+  line-height: 24px;
+  color: #333;
+  text-shadow: 1px 1px 0 #fefefe, -1px -1px 0 #fefefe, -1px 1px 0 #fefefe, 1px -1px 0 #fefefe, 0 1px 0 #fefefe, 0 -1px 0 #fefefe, 1px 0 0 #fefefe, -1px 0 0 #fefefe, 1px 1px 2px #000;
+  -webkit-font-smoothing: antialiased !important;
+  white-space: nowrap;
+  overflow: hidden;
+}
+
+.markdown-body .progress-bar {
+  height: 24px;
+  float: left;
+  -webkit-border-radius: 3px;
+  -moz-border-radius: 3px;
+  border-radius: 3px;
+  background-color: #96c6d7;
+  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .5), inset 0 -1px 0 rgba(0, 0, 0, .1);
+  background-size: 30px 30px;
+  background-image: -webkit-linear-gradient(
+    135deg, rgba(255, 255, 255, .4) 27%,
+    transparent 27%,
+    transparent 52%, rgba(255, 255, 255, .4) 52%,
+    rgba(255, 255, 255, .4) 77%,
+    transparent 77%, transparent
+  );
+  background-image: -moz-linear-gradient(
+    135deg,
+    rgba(255, 255, 255, .4) 27%, transparent 27%,
+    transparent 52%, rgba(255, 255, 255, .4) 52%,
+    rgba(255, 255, 255, .4) 77%, transparent 77%,
+    transparent
+  );
+  background-image: -ms-linear-gradient(
+    135deg,
+    rgba(255, 255, 255, .4) 27%, transparent 27%,
+    transparent 52%, rgba(255, 255, 255, .4) 52%,
+    rgba(255, 255, 255, .4) 77%, transparent 77%,
+    transparent
+  );
+  background-image: -o-linear-gradient(
+    135deg,
+    rgba(255, 255, 255, .4) 27%, transparent 27%,
+    transparent 52%, rgba(255, 255, 255, .4) 52%,
+    rgba(255, 255, 255, .4) 77%, transparent 77%,
+    transparent
+  );
+  background-image: linear-gradient(
+    135deg,
+    rgba(255, 255, 255, .4) 27%, transparent 27%,
+    transparent 52%, rgba(255, 255, 255, .4) 52%,
+    rgba(255, 255, 255, .4) 77%, transparent 77%,
+    transparent
+  );
+}
+
+.markdown-body .progress-100plus .progress-bar {
+  background-color: #a6d796;
+}
+
+.markdown-body .progress-80plus .progress-bar {
+  background-color: #c6d796;
+}
+
+.markdown-body .progress-60plus .progress-bar {
+  background-color: #d7c896;
+}
+
+.markdown-body .progress-40plus .progress-bar {
+  background-color: #d7a796;
+}
+
+.markdown-body .progress-20plus .progress-bar {
+  background-color: #d796a6;
+}
+
+.markdown-body .progress-0plus .progress-bar {
+  background-color: #c25f77;
+}
+
+.markdown-body .candystripe-animate .progress-bar{
+  -webkit-animation: animate-stripes 3s linear infinite;
+  -moz-animation: animate-stripes 3s linear infinite;
+  animation: animate-stripes 3s linear infinite;
+}
+
+@-webkit-keyframes animate-stripes {
+  0% {
+    background-position: 0 0;
+  }
+
+  100% {
+    background-position: 60px 0;
+  }
+}
+
+@-moz-keyframes animate-stripes {
+  0% {
+    background-position: 0 0;
+  }
+
+  100% {
+    background-position: 60px 0;
+  }
+}
+
+@keyframes animate-stripes {
+  0% {
+    background-position: 0 0;
+  }
+
+  100% {
+    background-position: 60px 0;
+  }
+}
+
+.markdown-body .gloss .progress-bar {
+  box-shadow:
+    inset 0 4px 12px rgba(255, 255, 255, .7),
+    inset 0 -12px 0 rgba(0, 0, 0, .05);
+}
+
+/* MultiMarkdown Critic Blocks */
+.markdown-body .critic_mark {
+  background: #ff0;
+}
+
+.markdown-body .critic_delete {
+  color: #c82829;
+  text-decoration: line-through;
+}
+
+.markdown-body .critic_insert {
+  color: #718c00 ;
+  text-decoration: underline;
+}
+
+.markdown-body .critic_comment {
+  color: #8e908c;
+  font-style: italic;
+}
+
+.markdown-body .headeranchor {
+  font: normal normal 16px fontawesome-mini;
+  line-height: 1;
+  display: inline-block;
+  text-decoration: none;
+  -webkit-font-smoothing: antialiased;
+  -moz-osx-font-smoothing: grayscale;
+  -webkit-user-select: none;
+  -moz-user-select: none;
+  -ms-user-select: none;
+  user-select: none;
+}
+
+.headeranchor:before {
+  content: '\e157';
+}
+
+.markdown-body .task-list-item {
+  list-style-type: none;
+}
+
+.markdown-body .task-list-item+.task-list-item {
+  margin-top: 3px;
+}
+
+.markdown-body .task-list-item input {
+  margin: 0 4px 0.25em -20px;
+  vertical-align: middle;
+}
+
+/* Media */
+@media only screen and (min-width: 480px) {
+  .markdown-body {
+    font-size:14px;
+  }
+}
+
+@media only screen and (min-width: 768px) {
+  .markdown-body {
+    font-size:16px;
+  }
+}
+
+@media print {
+  .markdown-body * {
+    background: transparent !important;
+    color: black !important;
+    filter:none !important;
+    -ms-filter: none !important;
+  }
+
+  .markdown-body {
+    font-size:12pt;
+    max-width:100%;
+    outline:none;
+    border: 0;
+  }
+
+  .markdown-body a,
+  .markdown-body a:visited {
+    text-decoration: underline;
+  }
+
+  .markdown-body .headeranchor-link {
+    display: none;
+  }
+
+  .markdown-body a[href]:after {
+    content: " (" attr(href) ")";
+  }
+
+  .markdown-body abbr[title]:after {
+    content: " (" attr(title) ")";
+  }
+
+  .markdown-body .ir a:after,
+  .markdown-body a[href^="javascript:"]:after,
+  .markdown-body a[href^="#"]:after {
+    content: "";
+  }
+
+  .markdown-body pre {
+    white-space: pre;
+    white-space: pre-wrap;
+    word-wrap: break-word;
+  }
+
+  .markdown-body pre,
+  .markdown-body blockquote {
+    border: 1px solid #999;
+    padding-right: 1em;
+    page-break-inside: avoid;
+  }
+
+  .markdown-body .progress,
+  .markdown-body .progress-bar {
+    -moz-box-shadow: none;
+    -webkit-box-shadow: none;
+    box-shadow: none;
+  }
+
+  .markdown-body .progress {
+    border: 1px solid #ddd;
+  }
+
+  .markdown-body .progress-bar {
+    height: 22px;
+    border-right: 1px solid #ddd;
+  }
+
+  .markdown-body tr,
+  .markdown-body img {
+    page-break-inside: avoid;
+  }
+
+  .markdown-body img {
+    max-width: 100% !important;
+  }
+
+  .markdown-body p,
+  .markdown-body h2,
+  .markdown-body h3 {
+    orphans: 3;
+    widows: 3;
+  }
+
+  .markdown-body h2,
+  .markdown-body h3 {
+    page-break-after: avoid;
+  }
+}
+</style><style>/*GitHub*/
+.codehilite {background-color:#fff;color:#333333;}
+.codehilite .hll {background-color:#ffffcc;}
+.codehilite .c{color:#999988;font-style:italic}
+.codehilite .err{color:#a61717;background-color:#e3d2d2}
+.codehilite .k{font-weight:bold}
+.codehilite .o{font-weight:bold}
+.codehilite .cm{color:#999988;font-style:italic}
+.codehilite .cp{color:#999999;font-weight:bold}
+.codehilite .c1{color:#999988;font-style:italic}
+.codehilite .cs{color:#999999;font-weight:bold;font-style:italic}
+.codehilite .gd{color:#000000;background-color:#ffdddd}
+.codehilite .ge{font-style:italic}
+.codehilite .gr{color:#aa0000}
+.codehilite .gh{color:#999999}
+.codehilite .gi{color:#000000;background-color:#ddffdd}
+.codehilite .go{color:#888888}
+.codehilite .gp{color:#555555}
+.codehilite .gs{font-weight:bold}
+.codehilite .gu{color:#800080;font-weight:bold}
+.codehilite .gt{color:#aa0000}
+.codehilite .kc{font-weight:bold}
+.codehilite .kd{font-weight:bold}
+.codehilite .kn{font-weight:bold}
+.codehilite .kp{font-weight:bold}
+.codehilite .kr{font-weight:bold}
+.codehilite .kt{color:#445588;font-weight:bold}
+.codehilite .m{color:#009999}
+.codehilite .s{color:#dd1144}
+.codehilite .n{color:#333333}
+.codehilite .na{color:teal}
+.codehilite .nb{color:#0086b3}
+.codehilite .nc{color:#445588;font-weight:bold}
+.codehilite .no{color:teal}
+.codehilite .ni{color:purple}
+.codehilite .ne{color:#990000;font-weight:bold}
+.codehilite .nf{color:#990000;font-weight:bold}
+.codehilite .nn{color:#555555}
+.codehilite .nt{color:navy}
+.codehilite .nv{color:teal}
+.codehilite .ow{font-weight:bold}
+.codehilite .w{color:#bbbbbb}
+.codehilite .mf{color:#009999}
+.codehilite .mh{color:#009999}
+.codehilite .mi{color:#009999}
+.codehilite .mo{color:#009999}
+.codehilite .sb{color:#dd1144}
+.codehilite .sc{color:#dd1144}
+.codehilite .sd{color:#dd1144}
+.codehilite .s2{color:#dd1144}
+.codehilite .se{color:#dd1144}
+.codehilite .sh{color:#dd1144}
+.codehilite .si{color:#dd1144}
+.codehilite .sx{color:#dd1144}
+.codehilite .sr{color:#009926}
+.codehilite .s1{color:#dd1144}
+.codehilite .ss{color:#990073}
+.codehilite .bp{color:#999999}
+.codehilite .vc{color:teal}
+.codehilite .vg{color:teal}
+.codehilite .vi{color:teal}
+.codehilite .il{color:#009999}
+.codehilite .gc{color:#999;background-color:#EAF2F5}
+</style><title>custom</title></head><body><article class="markdown-body"><h2 id="original-document"><a href="https://docs.dmoj.ca/#/problem_format/custom_checkers">Original Document</a><a class="headerlink" href="#original-document" title="Permanent link"></a></h2>
+<p>A <code>checker</code> Python script must implement a function that is called by the judge:</p>
+<div class="codehilite"><pre><span class="k">def</span> <span class="nf">check</span><span class="p">(</span><span class="n">process_output</span><span class="p">,</span> <span class="n">judge_output</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
+    <span class="c1"># return True/False</span>
+</pre></div>
+
+<p>Variables in global scope will exist throughout the grading process.</p>
+<p><code>**kwargs</code> is a directory containing</p>
+<ul>
+<li><code>submission_source</code>: the source code of the submission</li>
+<li><code>judge_input</code>: the judge&rsquo;s input</li>
+<li><code>point_value</code>: the point value of the test case</li>
+<li><code>case_position</code>: the index of the test case</li>
+<li><code>batch</code>: the batched the test case belongs to</li>
+<li><code>submission_language</code>: the language the submission was submitted in</li>
+<li><code>binary_data</code>: a boolean, which is <code>True</code> if the data was not normalized to Linux line endings, and <code>False</code> otherwise</li>
+<li><code>execution_time</code>: the runtime of the program, in seconds</li>
+</ul>
+<p>Additionally, if the <code>check</code> method has the flag <code>run_on_error</code> set, it will be run against the submission&rsquo;s output, even if it receives an IR/TLE/RTE/MLE verdict.
+The only built-in checker that has this flag set is the <code>linecount</code> checker.</p>
+<h2 id="return">Return:<a class="headerlink" href="#return" title="Permanent link"></a></h2>
+<p><code>True</code> for correct output, <code>False</code> for incorrect one</p>
+<h2 id="sample-checker">Sample Checker:<a class="headerlink" href="#sample-checker" title="Permanent link"></a></h2>
+<p>Here is the checker for the problem: Print 2 integers having sum equal to n (n is read from input).</p>
+<div class="codehilite"><pre><span class="k">def</span> <span class="nf">check</span><span class="p">(</span><span class="n">process_output</span><span class="p">,</span> <span class="n">judge_output</span><span class="p">,</span> <span class="n">judge_input</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span>
+    <span class="c1"># process the input</span>
+    <span class="n">input_arr</span> <span class="o">=</span> <span class="n">judge_input</span><span class="o">.</span><span class="n">split</span><span class="p">()</span>
+    <span class="k">assert</span><span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="n">input_arr</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">)</span>
+    <span class="n">n</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">input_arr</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span>
+
+    <span class="c1">#  process the contestant&#39;s output</span>
+    <span class="n">output_arr</span> <span class="o">=</span> <span class="n">process_output</span><span class="o">.</span><span class="n">split</span><span class="p">()</span>
+
+    <span class="k">if</span> <span class="p">(</span><span class="nb">len</span><span class="p">(</span><span class="n">output_arr</span><span class="p">)</span> <span class="o">!=</span> <span class="mi">2</span><span class="p">):</span>
+        <span class="k">return</span> <span class="bp">False</span>
+
+    <span class="k">try</span><span class="p">:</span>
+        <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">output_arr</span><span class="p">[</span><span class="mi">0</span><span class="p">]),</span> <span class="nb">int</span><span class="p">(</span><span class="n">output_arr</span><span class="p">[</span><span class="mi">1</span><span class="p">])</span>
+    <span class="k">except</span><span class="p">:</span>
+        <span class="k">return</span> <span class="bp">False</span>
+
+    <span class="k">if</span> <span class="p">(</span><span class="n">n</span> <span class="o">==</span> <span class="n">a</span> <span class="o">+</span> <span class="n">b</span><span class="p">):</span>
+        <span class="k">return</span> <span class="bp">True</span>
+    <span class="k">return</span> <span class="bp">False</span>
+</pre></div></article></body></html>
+{% endblock body %}
\ No newline at end of file
diff --git a/templates/problem/data.html b/templates/problem/data.html
index 639dfc0..389ec64 100644
--- a/templates/problem/data.html
+++ b/templates/problem/data.html
@@ -26,7 +26,7 @@
 
             var $table = $('#case-table');
             $table.on('add-row', function (e, $tr) {
-                update_select2();
+                // update_select2();
                 $tr.find('input').filter('[id$=file]').each(function () {
                     var $select, val = $(this).replaceWith($select = $('<select>').attr({
                         id: $(this).attr('id'),
@@ -97,8 +97,17 @@
 
             function checker_custom($checker, $custom_checker) {
                 $tr = $custom_checker.parent().parent();
+                $td = $checker.parent();
+                var $sample = $("<a/>",{
+                    text: "Sample Checker",
+                    style: "margin-left:3em;",
+                    target: "_blank",
+                    href: "{{url('custom_checker_sample')}}"
+                }).appendTo($td);
+
                 $checker.change(function () {
                     $tr.toggle($checker.val().startsWith('custom')).change();
+                    $sample.toggle($checker.val().startsWith('custom')).change();
                 }).change();
             }
 
@@ -286,6 +295,15 @@
                 }
             });
 
+            $('input#delete-all').change(function() {
+                if (this.checked) {
+                    $("input[name$='DELETE']").attr('checked', true);
+                }
+                else {
+                    $("input[name$='DELETE']").attr('checked', false);
+                }
+            });
+
             var $controls = $('#column-visible');
             var problem = $controls.attr('data-problem');
             $controls.find('input').change(function () {
@@ -305,7 +323,7 @@
                 }
                 $this.prop('checked', filled).trigger('change');
             });
-        });
+        }).change();
     </script>
 {% endblock %}
 
@@ -448,6 +466,10 @@
                 <input type="checkbox" data-suffix="generator_args">
                 {{ _('Generator args') }}
             </label>
+            <label>
+                <input type="checkbox" id="delete-all">
+                {{ _('Delete all') }}
+            </label>
         </div>
         <table id="case-table" class="table">
             <thead>
@@ -463,7 +485,8 @@
                 <th class="checker">{{ _('Checker') }}</th>
                 <th class="generator-args">{{ _('Generator args') }}</th>
                 {% if cases_formset.can_delete %}
-                    <th>{{ _('Delete?') }}</th>
+                    <th>{{ _('Delete?') }} 
+                    </th>
                 {% endif %}
             </tr>
             </thead>