Started to add support for autopilot firmware updates, added Linux compile instructions, fixed date in mavlink.h to english independent of OS language settings

Major cleanup of MainWindow constructor. All widgets have now the visible property set to false on its constructor

UASWaypointManager now implements the protocol described in http://qgroundcontrol.org/waypoint_protocol

[landauf] added new list for letters and updated the pattern list (confidence and count are updated)

This reverts commit f4f37122, reversing
changes made to 0d757aae.