Merge pull request #916 from ablake/next

Quick fix for animating Container opacity.
Merge pull request #917 from ablake/next

Fixing upside-down "full image" UVs used as defaults.
Enables controlling UI forms with a gamepad.  Adds a few things to the forms test in order to test
this feature.
Merge branch 'next' of https://github.com/blackberry/GamePlay into next

Conflicts:
	gameplay/src/Control.cpp