Store a reference to a scenepoint array in Scene

When constructing a scene, you must pass in a reference to a scene-
point array. The Scene will then store that reference and work with
it in exactly the same way it worked with its own scenepoint array.
Implement drawBig method
Override drawPoints method in RC3DModule

This commit adds texture support and removes naming individual
points. For some reason, calling glBegin and glEnd within the loop
that iterates through the points completely broke rendering the
scene. Moving glBegin and glEnd outside of the loop fixed the
issue, but meant that individual points could not be named. The naming
was for the point selection mode, which is not used in the RC3DModule.
Move initializing scene points into the scene creation code

Also within this method I've removed the deletion of the photometric
data.
Add triangle drawing to RC3DModule

This is now set as the default. Eventually I'll add in more options
to change the visual appearance.