Updated docs.
Marked optional parameters as optional in docs.
Removed unneeded __init__s from client and server.
Sorting languages before displaying selector.
Updated navbar styling.
Updated "About" page.
Updated home page.
Renamed title on release group selection page.
Removed top margin from heading on home page.
Updated default link color.
Added release year into title on release group page.
Updated styling of review page.
Changed point at which the navbar becomes collapsed.
Changed avatar alignment.
Added abbreviation for rating on review page that shows number of upvotes and downvotes.
Updated messages.pot
Removed test code.
Merge branch 'testing'
Merge branch 'lang-sort'
Fixed last message printed in dump_db().
Changed location of dump_db() output.