Startup scripts: Corrected cases where commander was not started, updated several outdated scripts
Startup scripts: Start the commander early and let it try to open the mavlink_fd with 20Hz
Merge pull request #515 from julianoes/startup_fixes

Startup script update
land motor lim independent of flare
Merge branch 'master' of github.com:PX4/Firmware into fw_autoland
Merge branch 'fw_autoland' of github.com:thomasgubler/Firmware_Private into fw_autoland