added simulated holdingClickOnEntity in case of no mouse move
add rotate support to movable.js
added sounds to moving
Merge pull request #3817 from ZappoMan/movables

Add "rotate" and "sounds" to movable.js
Merge pull request #3816 from AndrewMeadows/bispinor

changes to EntityTree simulation state management
merge upstream/master into andrew/inertia