Fix css on darkmode

judge/widgets/pagedown.py

@@ -38,6 +38,15 @@ else:
             super(PagedownWidget, self).__init__(*args, **kwargs)
 
         class Media:
+            extend = False
+            js = [
+                "pagedown/Markdown.Converter.js",
+                "pagedown-extra/pagedown/Markdown.Converter.js",
+                "pagedown/Markdown.Sanitizer.js",
+                "pagedown/Markdown.Editor.js",
+                "pagedown-extra/Markdown.Extra.js",
+                "pagedown_init.js",
+            ]
             css = {
                 "all": [
                     "markdown.css",

judge/widgets/select2.py

@@ -104,8 +104,7 @@ class Select2Mixin(object):
             https://docs.djangoproject.com/en/1.8/topics/forms/media/#media-as-a-dynamic-property
         """
         return forms.Media(
-            js=[DEFAULT_SELECT2_JS, "django_select2.js"],
-            css={"screen": [DEFAULT_SELECT2_CSS]},
+            js=["django_select2.js"],
         )