1. Decouple MM1 dependency from RC controller. Now MM1 can act as a joystick...

1. Decouple MM1 dependency from RC controller. Now MM1 can act as a joystick and a drive train independently.
2. Add config for MM1 max throttle and steering adjustment
3. Add test case to robohat.py
4. Add map_range_float to util
5. Fix missing import in robohat.py
6. Bug fix: wrong order of parameter passed into robohat.py in manage.py
7. Consistently use the order angle then throttle in robohat.py
8. Add "MM1" option to controller type and drive train in cfg_complete.py