Made FlxUISprite & FlxUIText resizable, added resize_axis to resizables,
Added "load_if" test to change/align tags, added Point helper functions to U
FlxUI: added showAsset(), added loadMonoScaledImage() to Utility class U.hx
Merge branch 'dev' of https://www.github.com/HaxeFlixel/flixel-ui into dev

Conflicts:
	flixel/addons/ui/FlxUIRegion.hx