mavlink: missions manager compID cleanup, use the common compID, stict compID checks for incoming messages
pca9685: correct input scaling
Merge pull request #1298 from PX4/adafruiti2cpwm

pca9685: correct input scaling
navigator: correct mode for land and termination
Merge pull request #1299 from PX4/navigatorstatefix

navigator: correct mode for land and termination
sensors: remove warnx
Merge pull request #1300 from PX4/sensorswarnx

sensors: remove warnx
Be more permissive with mission component IDs, renamed camera to onboard link but still accepting same commandline syntax
Merge pull request #1297 from PX4/mission_fix

mavlink: missions manager compID cleanup
Merge remote-tracking branch 'upstream/master' into obcfailsafe