Some little fixes
Display skill labels only once
Adding basic gui for per-player difficulties
Merge remote-tracking branch 'upstream/master' into perPlayerDifficulties
Split kart selection screen into more files
Add per-player difficulty
Ignore vim swap files
Add difficulty to karts
Apply per-player difficulty
Merge remote-tracking branch 'upstream/master' into perPlayerDifficulties
Add break_time_increase to perPlayerDifficulty
Rename icons to more generic names
Fix crash in multiplayer kart selection screen
Switch per player difficulty to player config
Fix focus crash in kart selection screen
Merge remote-tracking branch 'upstream/master' into perPlayerDifficulties
Replace accidently placed tabs
Fix wrong badge display
Merge remote-tracking branch 'upstream/master' into perPlayerDifficulties
Merge remote-tracking branch 'upstream/master' into perPlayerDifficulties