Changed the display name background alpha to 0.2 (was 0.95)
Correct text position for default and non default meshes
Bounding box for text background is now text dependent, much nicer now
Removed duplicated calculation of bounding rect for display name
Merge pull request #2045 from josecpujol/19489

19489
Working on avatar billboards.
Merge branch 'master' of https://github.com/highfidelity/hifi into bilbo
More work on billboards.