Merged renderer changes from qtsimiam.
Now supporting transparency, zoom and default pose
Added world open dialog to Qt interface
Used WX blit function. Maybe solved crash problems
Fixed khepera3 sensor position and drawing
Now using WX blit everywhere
Added a grid to renderer
Simulator auto-zooms on world
Added view control to UI (Qt only, thread-unsafe)
Merge branch 'qtsimiam' of github.com:whittenjaw85/pysimiam

Conflicts:
	pysimiam.py
	scripts/simulator.py
Merge qtsimiam
Merge branch 'renderer' of github.com:whittenjaw85/pysimiam

Conflicts:
	pysimiam.py
	scripts/khepera3.py
	scripts/renderer.py
	scripts/simulator.py
	scripts/wxrenderer.py