Move with grab button
Added FWD button as grab controller (so PrioVR will work)
Merge pull request #2895 from PhilipRosedale/master

Fly and move/turn using one controller and grab button
Clean up log
Merge pull request #2896 from Atlante45/log_cleaning

Clean up log
Fix for bad bounding shape for multi-root models.
Merge pull request #2897 from AndrewMeadows/thermonuclear

Fix for bad bounding shape for multi-root models.
added delete support to edit models
fix broken mouse edit
Merge pull request #2898 from ZappoMan/deletemodel

added delete support to edit models
Fixed script editor crash when script calls Script.stop(). Also made the
processEraseMessage wait until it can lock to ensure particles are
deleted.
Merge branch 'master' of https://github.com/highfidelity/hifi