Provide a means of tracking resource download progress.  Until we have a
user-friendly progress meter/throbber, put the download progress in the
extended stats.
Adjust avatar LOD faster.  Closes #2496.
Merge branch 'master' of https://github.com/highfidelity/hifi
Bump up the rate at which we increase detail.
Merge branch 'master' of https://github.com/highfidelity/hifi
Merge pull request #2536 from ey6es/master

Provide a simple means of tracking download progress, increase speed at which we adjust avatar LOD.