Bugfix GetHashofDirs

GetHashofDirs would calculate an incorrect hash on directories with `.DR_Store` etc; now it only scans by default *xml files.
what_to_hash is the correct pattern to use

Signed-off-by: Fotis Georgatos <fotis.georgatos@uni.lu>
Merge pull request #969 from fgeorgatos/fix_GetHashofDirs

Bugfix GetHashofDirs
Change all OpenPilot links to TauLabs Wiki
https://github.com/TauLabs/TauLabs/issues/975

Signed-off-by: cGiesen <info@klick-punkte.info>
Merge pull request #977 from cGiesen/next

Change all OpenPilot links to TauLabs Wiki
[Actuator]: Fixed ActuatorSettings to use uint16, as negative values are
not necessary for pulse widths.