Limited sound extensions to .mp3, .ogg and .wav
Add sort by date as first option in SortWidget.
Fixes thumbnails size in galleries.
Fixes ElementContext positioning.
Fixes PositionedHiddenPanel#positionPanel recursion in some cases. Improves ScrollPaneDif fading background.
Added sensorLandscape to manifest.
Merge pull request #793 from RotaruDan/fixes

Fixes