mavlink: use altitude AMSL in VFR message
Merge branch 'master' into vfr_fix
Implemented altitude and velocity hold mode
fixed somereview comments
Display ESC data in the status output
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Merge pull request #1482 from sjwilks/uavcan_debug

Display ESC data in the status output
Merge pull request #1476 from friekopter/vel_alt_hold

Implemented altitude and velocity hold mode
Merge pull request #1391 from PX4/vfr_fix

mavlink: use altitude AMSL in VFR message
Fix vehicle command docs to AMSL
uORB mission topic: Add AMSL as clarificaiton in docs
uORB home position: Add AMSL as clarificaiton in docs
Merge branch 'master' into bennodiscovery