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
don't listen to VS packets not from current VS
Merge pull request #711 from ZappoMan/bug_fixes

adjust server sleep time to allow 60fps
Merge pull request #712 from birarda/master

fix VS packet receipt on domain server switch
save custom domain server hostname to QSettings
if the hostname field is left blank reset to DEFAULT_DOMAIN_HOSTNAME
Merge pull request #713 from birarda/ds-switch

smarter domain-server hostname switching
Merge branch 'master' of https://github.com/worklist/hifi into dev4