Bug Fixes from Hardware Testing

Mainly bug fixes. Updated uints to ints in motor library. Brake function
in motor library appears to be buggy - currently testing.
Motor library is close to being moved to TESTED status.
PinDefs has typo for motor PWM pins.
Incorrent function description in RDUART library for available()
function.
Minor details in BT library to do with handware differences in rev 1.2a.
##ARDA## -> do you want baudrate 912600 or 921600?? There are
differences in my local copies and GitHub versions, please make sure
it's as you want.