Moves common code and doc for setViewing(), leftWheelMotion(), bottomWheelMotion(), rightWheelMotion(), setCursorRepresentation() and afterRealizeHook() to template file.
Moves common code and doc for setViewing(), leftWheelMotion(), bottomWheelMotion(), rightWheelMotion(), setCursorRepresentation() and afterRealizeHook() to template file.

Alexpux/SoXt,Alexpux/SoXt,Alexpux/SoXt,Alexpux/SoXt