Merge branch 'beta' into beta_mavlink
Merge branch 'master' of github.com:PX4/Firmware into beta_mavlink
Merged master into beta_mavlink
mavlink: add onboard function for camera capture commands
mavlink: camera mode with rate multiplier
mavlink: correct verbose info, bytes not bits
mavlink: camera mode rate is now correct
Implemented last missing messages, added stream config for USB, made stream config fails for non-existing mavlink links non-fatal
Changed RC scaling for fixed wing defaults
Merge branch 'master' of github.com:PX4/Firmware into beta_mavlink2
Merge branch 'beta_mavlink' of github.com:PX4/Firmware into beta_mavlink2
Merge remote-tracking branch 'px4/beta_mavlink2' into beta_mavlink2_camera

Conflicts:
	src/modules/mavlink/mavlink_messages.cpp
Merge pull request #754 from julianoes/beta_mavlink2_camera

Beta mavlink2: onboard camera capture
position_estimator_inav: "alt0" parameter implemented
position_estimator_inav: added NaN checks
Merge branch 'beta_mavlink2' into follower
Merge branch 'inav_nan_checks' into follower