Checkout/Checkin Lighting Files

On checkout, if no node is selected, it now list lighting files for the user to checkout.
On checkin, if no node is selected, it now checks in the current file.

In order to easily accommodate this, a change was made to the file structure.  There are no longer 'animation' and 'lighting' folders.  There is now a 'shots' folder.  In the shots folder there will now be a folder for each shot (ie a01) and in that folder there will be a versioned animation, lighting, and compositing folder.

example:
/groups/owned/PRODUCTION/shots/a01/animation
/groups/owned/PRODUCTION/shots/a01/lighting 
/groups/owned/PRODUCTION/shots/a01/compositing