removed duplicated line of code
created _CHRIS_INTERACTIVE_PLUGIN_.createTreeFolder function
Merge branch 'master' into TIDO
register and send functions implemented
code renaming and re-engineering
onThreeDContDblClick and onRemoteThreeDContDblClick implemented
onTwoDContClick and onRemoteTwoDContClick implemented
on3DVolMouseWheel implemented and general code refactoring twoD->2D treeD->3D
some code refactoring on3DVol->on3DRenderer
added Interaction GUI elements to populateVolWidget()
added Interaction GUI elements to updateVolWidget()
use event mechanism to ensure TogetherJS is ready

prelyminary worl on the scene synchronization
collaborator creation within Viewer
fix volume selection id bug
cleaner and more modular code

synchronize keys, layout anf view
Merge branch 'TIDO' of https://github.com/FNNDSC/chrisreloaded into TIDO

Conflicts:
	plugins/viewer/widget/js/demo.js
	plugins/viewer/widget/js/viewer.js
Collab using TogetherJS.checkForUsersOnChannel to generate TogetherJSReady event
Merge branch 'TIDO' of https://github.com/FNNDSC/chrisreloaded into TIDO

Conflicts:
	plugins/viewer/widget/js/viewer.js
Rename TogetherJSReady to CollabReady
window.console.log('collabReady sent') moved into TogetherJS.checkForUsersOnChannel