define force setpoint uorb topic
force setpoint: fix comment
navigator: NavigatorMode and MissionBlock API cleanup
Merge branch 'navigator_rewrite' into navigator_rewrite_drton
navigator: whitespace fix
Update estimator from Paul
navigator: API changes, reparing to move manual modes to navigator, WIP
Merge branch 'navigator_rewrite' into navigator_rewrite_drton
navigator: more API changes, duplicate code removed
Merge remote-tracking branch 'upstream/master' into forcesetpoint

Conflicts:
	src/modules/uORB/objects_common.cpp
force setpoint uorb topic: add yaw field
navigator: mission mode fixed
Merge commit '857b843d445f59f2dc393e4d5f879fc56f77a0e0' into navigator_rewrite_drton
navigator: takeoff on start of mission implemented
delete mavlink header files
mavlink as git submodule

Mavlink is now a git submodule because auto generated header files are
available at https://github.com/mavlink/c_library
Merge branch 'master' of github.com:PX4/Firmware into simon_test
Update estimator
Merge branch 'master' into navigator_rewrite_drton
navigator: takeoff altitude fixed