The PlantAppState (for 3d plant views) maintains a default position and
orientation that can be set at any time. A different default can be set
by editors that can access the view. PlantAppState handles
synchronization with the render thread.


Signed-off-by: Jordan Deyton <deytonjh@ornl.gov>
Adding a new menu to the MOOSE Model Builder ToolBar.
This menu gives the user a few options for setting the default camera
position and orientation.

Signed-off-by: Jordan Deyton <deytonjh@ornl.gov>