Version 0.6.7 CHANGELOG.md updates.  version.js updated to 0.6.8 for next sprint cycle.
Change task text to green as a visible representation of task completion. Fixes #1785.
Add ambient color to tutorial applications. Fixes #1787.
Add catalog files for the humvee lesson application, and update catalog files for the radio lesson.
Add link to humvee-lesson to the lesson recipe.
Merged over some of the texture changes from the internal branch
Add Rob's sandbox application to the catalog page.
Initial vcte app submission
Changed default video size from 512x512 to 1024x512 (WxH)
resolved a case sensitive issue with screenTest.dae
Removed tv_screens reference.  Throwing error once pushed to the development branch.
Fixed a 'this' reference in the textureLoading error callback
Increase the near clip.

Prevents sizzling on the information boards in the back of the room.
Fix case problems with .DAE extensions.

Of the ones with problems, normalize to lower case since the errors tend
to be in that direction.
Fix issue with the navscene key handler removing keyUp information from the object passed into the event
Add catalog files for VCTE app.
Move scoreBoard up to the properties block where its supposed to be.

Fixes #1807
Default minesweeper, sandtable and tile-puzzle to glge until we figure out ambient light issue
Fix physics and xmas-tree materials. Fixes #1796
Reset humvee translation in humvee-lesson on lesson start.