revert changes to cameraview.py
revert changes to cameraview.py

we need to make it easier for modules to extend the image view classes
to support custom behaviors.  We could do this through subclassing or
callbacks.  For now, I'm going to revert this code because the image
views shouldn't have TLD specific code in them.

openhumanoids/oh-distro,openhumanoids/oh-distro,openhumanoids/oh-distro,openhumanoids/oh-distro,openhumanoids/oh-distro,openhumanoids/oh-distro,openhumanoids/oh-distro,openhumanoids/oh-distro