Tags test.
Added playmaker project to build targets.
Tags for input sources.
Touch Id and tags in TouchDebugger.
Added Tags object to all InputSources.
Tags as fields and TagsDrawer stub.
Object tag, disabled tagsdrawer
Gesture.IsFriendly(gesture) is now public.
Tags filtering example.
Updated tags example scene.
Refactored Gesture inspector a bit.
Custom inspectors for input sources with tags. New VS projects.
Merge branch 'origin/dev-tags'

Conflicts:
	TouchScript/TouchPoint.cs
Updated examples for 4.5.
Updated projects for 4.5.
Updated playmaker examples for 4.5.