finished test for SortCommentsByDate
adding sort functionality for both TLC and Replies, still needs more testing
added SortCommentsByFreshness still draft phase, starting testing
finished testSortAllCommentsByProximity
added test stubs for the rest
finished testing for SortTLCByPicture
finished testing for SortRepliesByPicture
finished tests for sorting, save for sortByScoringSystem
Merge branch 'twendlan'