use radians instead of degrees (almost) everywhere
merge upstream master into "radians" project
switch ReceivedPacketProcessor to using QWaitCondition
first cut at making PacketSender use QWaitCondition
removed dontSleep from JurisdictionListener
fix comment and remove dead code
Merge pull request #2271 from ZappoMan/QWaitCondition

Fix runaway JurisdictionListener thread and other improvements
orientation stored in dataserver is in degrees
using glm::degrees() instead of DEGREES_PER_RADIAN
Merge pull request #2268 from AndrewMeadows/radians

prefer radians over degrees
Fix for OS X warning.
Merge branch 'master' of https://github.com/highfidelity/hifi
More OS X warning fixes.