Merge pull request #1186 from PX4/logging

Multi-instance handling for sensors
Merge pull request #1195 from jean-m-cyr/master

Clean up mavlink module
support force setpoints
Merge remote-tracking branch 'upstream/master' into offboard2_externalsetpointmessages
navigator: members initialization fixed
Merge pull request #1189 from PX4/navigator_cleanup

Navigator cleanup
Merge pull request #1102 from PX4/fwposwarnings

FW pos control: fix warnings and remove code
mtecs: add altitude prefiltering
Check if waypoint altitude is relative. Fixes #1197
navigator: Feedback strings / text and logic was not consistent in previous state, fixed.
uORB: Add navigation state
Log nav mode
Enable nav mode logging in navigator
Merge pull request #1202 from PX4/mtecsaltitudefilter

mtecs: add altitude prefiltering
Merge pull request #1199 from PX4/navlogfix

Nav log fix
Merge pull request #1198 from PX4/wpwarningfix

Check if waypoint altitude is relative. Fixes #1197
BlockDerivative: initialize in first run
Derivative fix: Comments and code style
Merge pull request #1203 from PX4/initderivativeblock

BlockDerivative: initialize in first run
Remove all unused TECS parameters