Kills local voxels if voxel server is removed from NodeList
- added notification hooks to NodeList
- implemented hooks in VoxelSystem to kill local voxels when
  voxel server is killed
Merge branch 'master' of https://github.com/worklist/hifi into multiple_voxel_servers
fix compiler warning
small tweak
adding jurisdiction to scene stats to implement add/drop effect, added command line to voxel server to not send environments
correctly handle freeing of memory for _jurisdictionRoot in VoxelSceneStats
Merge branch 'master' of https://github.com/worklist/hifi into multiple_voxel_servers

Conflicts:
	libraries/avatars/src/HandData.h
Merge branch 'master' of https://github.com/worklist/hifi into dev4
Merge branch 'master' of https://github.com/worklist/hifi into dev4
Rave glove fixes: removed double-stored glove mode members
Uncommented glove mode switch, which now calls a non-crashing method.
Fixed overlapping method names for very different methods (setRaveGloveMode becomes activateNewRaveGloveMode).
Touch-driven pitch happens immediately even when wearing gyros
Merge pull request #788 from machinelevel/dev4

Rave glove fixes: removed double-stored glove mode members …
Fixed per github feedback.
Also, to prevent a repeat of yesterday's crash trouble, disabled the mode switch, so that those working on the rave mode can enable it locally for testing.
Merge pull request #789 from machinelevel/dev4

Fixed per github feedback.
added notifications with jurisdiction details for when voxel servers come and go
Merge pull request #790 from PhilipRosedale/touchLook

Touch-driven pitch happens immediately even when wearing gyros
Render a string to show who is following who
Corrected wrong argument in sizeof
Merge branch 'master' of https://github.com/worklist/hifi into stalking_indicator
Add option to turn collisions on and off