mavlink: only publish telemetry status from GCS
Merge branch 'navigator_rewrite' into navigator_rewrite_estimator
Define float params properly: 0.0f instead of just 0
Merge remote-tracking branch 'px4/pr/1058' into navigator_rewrite_offboard

Conflicts:
	src/modules/commander/commander.cpp
	src/modules/commander/state_machine_helper.cpp
	src/modules/mavlink/mavlink_receiver.cpp
	src/modules/mavlink/mavlink_receiver.h
	src/modules/uORB/topics/vehicle_status.h
mavlink: don't lock dataman when updating mission state
Merge branch 'navigator_rewrite' into dataman_state_nav_rewrite
estimator: Improve error reporting and status printing (less flash, better resolution), move check and reset logic to a position AFTER the filter init. Do not externally zero the filter on resets but let the reset logic handle this.
Initialize velNED fields correctly, preventing a bogus initial filter reset
Merge pull request #969 from PX4/mavlink_stack

Mavlink stack usage improvements
Merge pull request #928 from PX4/ekf_auto_mag_decl

attitude_estimator_ekf: auto detect mag declination using GPS
Define NAV-PVT message
Fix to allow filter correction with vision position estimate
Clarified parameter comments and added @group attributed for auto-generation.
Merge pull request #1065 from ggregory8/vision_estimate

Fix to allow filter correction with vision position estimate
MPU6K: Use usleep where usleep should be used instead of up_udelay()
estimator: Get offsets under control, prepare GPS acceleration based initialization, but do not activate it yet
23 state estimator: Prepare GPS accel init (not yet active), clean up init calls
Remove debug output in commander spamming console
Capture TX issues in performance counter instead of spamming console in mavlink app
Merged master