Update the ProductionComment model to use a generic foreign key
rename ProductionComment to Comment
rename ProductionCommentForm to CommentForm
convert add_production_comment to a class-based view
convert edit_production_comment to a class-based view
convert delete_production_comment to a class-based view
refactor comment views into a base class that isn't tied to productions
make _production_comment_form.html non-production-specific
make add_comment template generic
use comment.get_absolute_url for permalinks
no need to pass commentable_context_name to add_comment template
make edit_comment template generic
add views for party comments! \o/
Add comments panel to parties page. (Also remove lightbox.less from productions/show.html's extra_css, because it's in the global css)
Refactor sticky left menu on party results so that it gets out of the way when you scroll past the bottom into comments