Fix OgreViewer
Summary
They are some bugs in OgreViewer.
Steps to reproduce
Launch OgreViewer, try to change parameters in the compositor manager or try to add a light in the light manager.
What is the current bug behavior?
Currently, the compositor selector does not update the compositor parameters view. Furthermore, when we add a new light to the light manager, an assertion appear.
What is the expected correct behavior?
The compositor selector should update the parameters view and the addition of lights must work.
Relevant logs and/or screenshots
Possible fixes
A compositor channel is broken in the xml file.