[builder] add helper to convert .blend to pure py

at least logic and empty objects (for now)
[builder] add setup replacing basics.blend (logic part)
[data] add basics without logic
[builder] setup cleanup
[builder] reload morse.core.blenderapi in setup

fix #405
[builder] remove MouseSensor.use_pulse

was not in 2.63
[builder] set render fps to 25 (default:24)
[builder] import at the top
[builder] setup scene
[test] add missing import math
[camera] workaround scene not in list