Basic toggle buttons.
datetimepicker
datetimepicker implementation for new matches.
Properly catch matches that fail to save.
Rework addition of players on new match page.
Disable/enable add_player button on new match page.
Fix bug where all players were put back on add_player list.
View tweak.
Hide add_player dropdown if all players placed.
Stop more players being added to a position if ties not allowed.
Display where new match will be inserted.
Stop (in JS) match being created with played_at in the future.
Loads of datetime validation.
Fix insertion of new match in GUI.
Only check tenth_match_ago if it exists.
Abstract joined_league
Validate match participants are not blank.. big change to tests!
Hide new match time for now.
Merge branch 'matchtime'