fix for mirror size on different scale resloutions
Merge branch 'master' of https://github.com/highfidelity/hifi into 20143
Merge branch 'master' of https://github.com/highfidelity/hifi into 20143
Merge branch 'master' of https://github.com/highfidelity/hifi into 20143
Merge pull request #3674 from stojce/20143

CR for Job #20143 - BUG:  Rearview mirror rendering at wrong size