Refactoring WP interface, somewhat brittle and untested at this point - use the master branch if you need stable code right now

Made MAVLink parser aware of line breaks in comments, added new servo output packet to QGC and simulation, enabled servo output display in new Actuator View (previous Payload view)

Added angle conversion testing, added battery settings option, added option to set MAVLink ID of groundstation

name element of mavlink_named_value is uint8_t

The current ArduPilotMega code uses MAVLINK_MSG_ID_GLOBAL_POSITION not
MAVLINK_MSG_ID_GLOBAL_POSITION_INT