Feature Request: Add option to reset angles/offsets adjustments made to current camera preset.

Adds "Reset Camera Preset Angle to Default" to view menu
Wasn't quite sure where to hook this up, menu seemed the best for the moment, but really it's more of a preferences button function.
Issue 97: Disable Leaving Mouselook when viewer window loses focus
French update touchup, by Nomade Zhao.
Avoid wasting particles on incredibly small/zero length ribbon segments.
Give 'gDeferredNonIndexedDiffuseAlphaMaskProgram' a unique 'name'
Skip particle-glow vbo logic if shaders aren't enabled.
Try manually nulling out vbo data if its entire contents are to be overwritten. Rumored intel/nvidia optimization.
Fitted mesh: hookup debug display to Advanced -> Charachter -> Show Avatar Joins
Merge branch 'master' of git://github.com/Shyotl/SingularityViewer