Cleaned Views, implementes MokapViews#onBackPressed.
ProjectView and HomeView implement BackListener.
BackListener fix.
Added skin for switch widget
Added switch widget
Revised shadow in app icons
Merge pull request #852 from jtorrente/appicon-shadows

Revised shadow in app icons
Merge pull request #849 from RotaruDan/backButton

Back event implementation.
Merge pull request #850 from gorco/switch

Switch
Missing assets
Minor fixes in tests
Circle assets
CirclesMenu widget
Builder
Test
Touch feedback in group editor
Layer selection in group editor
Fix in script
Missing resources
Added javadoc