Merge pull request #317 from virtual-world-framework/mars-game-staging

Mars game staging
Merge pull request #325 from virtual-world-framework/mars-game-staging

Mars game staging
Add VO

Adds in missing VO
Made VO changes and fixed Blockly disappearing

Made VO changes and fixed Blockly side bar disappearing - blocks are always visible now (may want to give indicators to players they shouldn't be moving)
Adds "Supplies" to the map
Merge pull request #327 from virtual-world-framework/Ken-Art

Ken McClure:  Update to rover tracks.  Adjusted them 1m in the y axis.  ...
Adds supplies to terrain
Split supplies objects for safety
Extension fix for supplies
Allow app developer to specify camera start poses as [radius, yaw, pitch]
Refactor targetFollower.js
Merge pull request #330 from virtual-world-framework/scenario-polish-pass

Scenario polish pass 8/15 2pm
Merge pull request #333 from virtual-world-framework/improved-camera-interface

Improved camera interface
In the panCamera action, drop the camera to third person before panning
Merge pull request #334 from virtual-world-framework/drop-to-third-person-before-pan

In the panCamera action, drop the camera to third person before panning
Start adding main menu

Conflicts:
	source/index.js

Conflicts:
	index.vwf.html
Added overlay
Play intro video after play game is clicked

Conflicts:
	source/index.js
Cleaned up render switching

Conflicts:
	source/index.js
Made main menu a scenario

Conflicts:
	index.vwf.yaml