The circular flyover is currently not working.

Changes:
Blender_module no longer has the stereo camera since it was not implemented correctly
Blender_module has slightly different setup for rending the scene
Flyover_module now has a basic framework for it that will be worked on tomorrow
Exiting happens outside of the Blender_Module
General code cleanup

Bug Fixes:
1.) Subprocesses now properly terminate themselves
2.) Hsv_merge now has formal exiting (did not correct error)
3.) Blender will no longer crash if you do not select a correct .IMG file
Merge branch 'master' of https://github.com/SpaceBlender/USGS
Resolved conflicts

Conflicts:
	UI_Module.py