Replaced force_unicode with force_text because original Django source code favors it
Cleaned up unnecessary HTML and filters from comment list template
Removed fragment identifier from next field's input value in comment form template because it creates an ugly URL as a hash appended to a query string parameter
Explicitly declared original Django comment model in custom comments app because explicit is better than implicit
Replaced comments_closed method with comments_open method for clarity's sake, and replaced corresponding methods in comments template