Smaller cmd payload, Added LCD control, Updated Aux cmds

Smaller Cmd Payload:
- Reduced payload further to 4 bytes original 16 bytes
- CMDS have resolution of 250 and occupy 1 byte each (Throttle, Pitch,
etc)
- Faster update rate for control

Wireless LCD Control:
- Added support for wireless serial control of attached LCD
- Enter menu by holding Start button
- Navigate menu using ABYX and Black button to save

Aux Cmds:
- Modified behaviour of AUX cmds. Defaults:
A: Wake Up/Disable Alt Hold
B: Mag Mode
Y: Ald Hold
X: HF Mode
KP Up: Angle Mode
KP Dn: Horizon Mode

Also removed controller based trim settings in favor of MultiWii
built-in trimming.