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
Rave glove demo: network-glove fixes
After this change, people can see each other's rave glove performances.
1. Moved hand->simulate call into avatar->simulate so that it gets called on all avatars, not just mine.
2. Hide the rave stage, so it's out of the way while we figure out the best way to darken the world, if that's still desired.
Merge pull request #787 from machinelevel/dev4

Rave glove demo: network-glove fixes
Merge pull request #786 from Ventrella/particles

Added member variables to Hand.cpp to manage rave glove mode switching
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