RPG Interface: demo update
Merge branch 'dev' of https://github.com/HaxeFlixel/flixel-demos into dev

Conflicts:
	User Interface/RPG Interface/source/State_TestShapes.hx
	User Interface/RPG Interface/source/State_Title.hx
RPG Interface: Fix up for flixel-ui
Merge branch 'dev' of https://github.com/HaxeFlixel/flixel-demos into dev