fix for ice-server heartbeat without an access token
Merge branch 'master' of https://github.com/highfidelity/hifi
fix for custom hifi URL lookup
Find Oculus libraries when using Visual Studio 2013
Update build instructions for VS2013 Community and Professional
Add option for white grid color
Darken colors of selection/highlight boxes
Update the tool window to use tabbed windows
Add rotation degrees overlay
Fix stretch tools not following mouse correctly
Fix position of rotation degrees display

The position of the display was not always correct depending on the
camera orientation relative to the selection.
Update normalizeDegrees to be exclusive on the -180 end
Fix tabification of tool windows
Remove now-unused *Offset variables
Remove unnecessary overlay property updates
have script loading be separate from ScriptEngine constructor
Merge pull request #3879 from birarda/master

fix for ice-server heartbeat without an access token, hifi:// URL
Merge pull request #3881 from ctrlaltdavid/find-vs2013-libovr

Find Oculus libraries when using Visual Studio 2013
Merge pull request #3882 from ctrlaltdavid/vs2013-build-instructions

Update build instructions for VS2013 Community and Professional
Merge pull request #3884 from huffman/entity-tools-polish

Entity tools polish