Add check to see if the referer has an instance id, to allow components to be loaded by jQuery, like from includes: in the yaml

Refs #3140
Fix sync issues with the humvee cameras

Refs #2870
Fix peer review comments

Refs #2870
Check usersShareView property instead

Refs #2870
Add todo in controlNavObject for adding a shared navObject to the model.

Refs #2870, #3145
Add comments explaining referer check

Refs #3140
Store usersShareView as a private variable in the view

Refs #2870
Merge pull request #115 from virtual-world-framework/branch/fix-humvee-bugs

Branch/fix humvee bugs

Fixes #2870, #3140