Added depth smoothing, experimenting with using depth minimum rather than
mean.
Terminology change to reflect the fact that we're no longer using the mean.
Working on full frame video support.
More work on full frame video.
More work on full frame sending.
Qt5 find package cleanup
Merge pull request #749 from birarda/keys

cleanup the Qt5 find package calls
Allow cycling between video send modes.
implement grid landscape import
Merge branch 'master' of https://github.com/worklist/hifi into tile_import

Conflicts:
	interface/src/Application.cpp
Merge pull request #750 from ZappoMan/tile_import

implement grid landscape import
Merge branch 'master' of https://github.com/worklist/hifi into pointy
Wrong array index here, and finger needs to be flagged as active so that the
avatar mixer will encode it.
Go ahead and show the leap hand by default, but don't include the fingers if
the palms are inactive (!)
Merge pull request #751 from ey6es/master

Fix for LEAP data transmission.
Merge pull request #752 from ey6es/pointy

Depth smoothing, full frame video support (along with ability cycle between no video, just face, full frame).