clean up of particle system
Merge remote-tracking branch 'upstream/master' into particles
removed deprecated code
more clean up
more clean up of particle system
cleaned up some compiler warnings and constants
point to stars file on non-SSL for easier RV redirect
Merge pull request #706 from birarda/master

switch stars file URL to non-SSL
Merge pull request #705 from ZappoMan/bug_fixes

cleaned up some compiler warnings and constants
Merge pull request #704 from Ventrella/particles

more code cleanup
Gyros don't move view for small head movements
fixed crash
Merge pull request #708 from ZappoMan/bug_fixes

fixed crash
Merge pull request #709 from PhilipRosedale/gyroTweaks

Gyros don't move view for small head movements
don't not kill NODE_TYPE_VOXEL_SERVER in removeSilentNodes
Merge pull request #710 from birarda/master

don't not kill NODE_TYPE_VOXEL_SERVER
clear environment data on domain server switch
fix grabbing of domain server hostname from QString
adjust server sleep time to allow 60fps
(cherry picked from commit 4d1ae4308546214abbd5be295a2cc002fab91d44)
correct reference to new hostname for Qt temp variable changes