new table type
Table JSON data
Change reloadAllScripts shortcut
Update runningScripts layout and add tip message
Remove redundant code
Add VR display auto-calibration logic
Add VR display auto-calibration user message calculations
Move table view code + wire row delete
Merge branch 'master' of https://github.com/highfidelity/hifi into attenuation_zones

Conflicts:
	domain-server/resources/describe-settings.json
Make overlays accessible from C++ code
Add some property setters to the billboard overlay
Display a static billboard prompting user to hold still to calibrate HMD
Fix avatar rotation erroneously initiating HMD calibration
Delete calibration message if exit VR display while calibrating
handle local socket changes by monitoring every so often
send an ICE heartbeat anytime the domain-server local socket changes
fix connection to slot for local addr update, refresh AcctManager after restart
add an optional forced reset of NetworkAccessManager
don't use an unecessary subclass of QNetworkAccessManager
fix for NetworkAccessManager getInstance return