BoardLEDs: all leds off during init
BattMonitor: add @Increment to CAPACITY description
Plane: add @Increment to battery failsafe descriptions
Copter: add @Increment to battery failsafe descriptions
Copter: add ANGLE_RATE_MAX param

Limits the maximum rotation rate requested by the angle controller which
is used in stabilize, loiter, rtl and auto flight modes
AP_Airspeed: fixed I2C semaphore handling for I2C airspeed

this affects MS4525DO on APM2