Merge pull request #83 from ZappoMan/view_frustum_work

Changed render_view_frustum() to handle broken camera yaw
added "_" to all of Philip's old private members and tidied up the formatting in Head.h some
Merge pull request #85 from Ventrella/master

cleaned up Head.h (renamed members to start with "_")
removed 2 unneeded debug lines
Merge remote-tracking branch 'upstream/master'
Removed negation of front vector which was reversing yaw in avatar skeleton.
reversed x value in hand movement
Merge remote-tracking branch 'upstream/master'
Fixed problem with avatars rendering at 2X their location
Adding support for false color to voxel nodes, also added AABox to get voxel bounding box
add glm to voxel-server build scripts
made a version of firstVertexForCode() that doesn't allocate memory, for improved performance and use
- created new copyFirstVertexForCode(code,output) which copies to the output buffer
- converted firstVertexForCode() to behave same way as before, but use copy version
added scale() method to AABox
Fixed LOD bug, added recurseTree helper, change tree to use safe/true/false colors
- Fixed LOD bug in server side sending
- added recurseTreeWithOperation() helper
- changed tree to use new VoxelNode color related API
got rid of a bunch of this-> at Stephen's request. Added debuging for box in view
Added inline getters for camera attributes
fixed LOD bug, added support for false colors
- fixed LOD bug related to mismatch with getting node position
- changed VoxelSystem to honor new VoxelNode color support for false color
- added some implementations of tree recursion that do things like false
  color the tree for distance, randomly, or resetting to true color, or
  stomping on the local version of the true color to debug packet sending
added menu items for false color operations