fix float literals to agree with coding standard
move applyRotationDelta() from Model to JointState
move details of getJointRotation() into JointState

also: remove unused getLeft/RightHandRotation() methods
Replaced nonfunctioning particleBird.js with awesome particleBirds.js
remove JointState::_translation

(use corresponding data in FBXJoint instead)
add JointState::restoreRotation()
Merge branch 'master' of https://github.com/highfidelity/hifi
minor cleanup + use 'fraction' instead of 'percent'
rename updateWorldTransforms to computeTransforms
minor rename and formatting
Merge branch 'master' of https://github.com/highfidelity/hifi
replace Model::setJointRotation() with JointState::setRotation()
add support for Menu.menuExists() and menu.menuItemExists()
add editModels to defaultScripts
changed Models/Delete and Voxels/Delete to both use same menu item name of 'Delete' so that either option will correctly delete either.
fix bug in Menu::removeAction() where we weren't removing the action key from the hash, memory leak, and other problems
make editVoxels.js and editModels.js play nice together with the delete menu item
Merge branch 'master' of https://github.com/highfidelity/hifi
Added particleBirds.js example script
Fixed mirror mode for non-headless models.