Subpolity list made more readable
Member count disabled since it's only confusing (doesn't represent true membership))
5 minutes is maybe a tad too much for default logout timeout, changed to 30 minutes
Document editing improved a lot: 1) Markdown rendering moved server-side with corresponding preview (AJAX), 2) Server-side Python used instead of client-side JavaScript for diff_match_patch, 3) Utility function for stripping HTML, 4) EpicEditor taken out (code still needs general house cleaning)