polishing teensy 3.0 receiver code
manual accelerometer offset tuning support

feature proposed by ReadError
optimizing
fixing some precompiler indentation
fixing some hidden bugs in serialcom
configurator eeprom version checking
data storage documentation
failsafe bugfix related to dynamic channel assig
Disable LED_PIN to be used in SPI
Merge commit '006619407c1173990763b16dcab09f751b5a903f'

Conflicts:
	controller/controller.ino
minimum armed throttle support (FC, configurator)
optimizing some configurator stuff
YAW correction limited to max +-20%
Merge branch 'master' of ssh://github.com/cTn-dev/Phoenix-FlightController
adding some magnetometer required calculations
magnetometer code improvements
Merge remote-tracking branch 'upstream/master'
Start adding support to ATTITUDE_MODE