flip mirror tools
Merge pull request #1140 from ZappoMan/bugfixes

flip mirror tools
Rear view zoom level

new zoom icons
save and restore state from settings
display zoomed out rear view when selected
Merge branch 'master' of https://github.com/worklist/hifi into 19447

Conflicts:
	interface/src/ui/RearMirrorTools.cpp
Merge pull request #1143 from birarda/assignment

add node kill debugging, remove ground plane
made sending environments off by default
Merge pull request #1144 from ZappoMan/stephens_requests

made sending environments off by default
first cut at user adjustable LOD
first cut at user adjustable LOD
Merge pull request #1145 from birarda/assignment

fix silent node removal thread join bug
added --getOctalCode to voxel edit
Merge pull request #1146 from ZappoMan/stephens_requests

added --getOctalCode to voxel edit so you can easily make jurisdictions from arbitrary voxels
Normal map support almost there.
more work on LOD slider
make server resend scene when LOD changes
adjustable LOD tweaks
Sign change.  Forgot we flip the texture coordinates.
Merge branch 'master' of https://github.com/worklist/hifi into ick
Merge branch 'master' of https://github.com/worklist/hifi into lod_slider
removed debug