Use mipmaps and trilinear filtering for models.  Closes #2180.
Merge branch 'master' of https://github.com/highfidelity/hifi
Display names are great, but not in the shadow map.  Closes #2208.
Track hysteresis for next model separately, but just in case, don't use
recursion to fall back on hysteresis value.  Closes #2209.
Merge branch 'master' of https://github.com/highfidelity/hifi

Conflicts:
	interface/src/avatar/MyAvatar.cpp
Merge branch 'master' of https://github.com/highfidelity/hifi
Merge pull request #2216 from ey6es/master

Generate mipmaps for avatar textures, fix shadows (don't render display names into the shadow map).