mate-user-share: disable bluetooth support

mate-bluetooth is not yet ported to bluez5. Various other fixes.
Updates based on the feedback from @City-busz via the AUR.
Groups reflect http://git.mate-desktop.org/
Libraries should not be in groups.
Renamed 'mate-extras' group 'mate-extra' as per TU feedback.
Remove the 'mate-extras-community' group as per TU feedback.
Remove libxnvctrl as per TU feedback.
mate-indicator-applet removed from the 'mate-extra' group and will not be sync to the package repository. For the AUR only.
'caja-dropbox' will not be synced to the package repository. For the AUR only.
Merge #114.
Correct group.
enable introspection.
The local repository idea was really stupid.
Added namcap task. Fixed conflict resolution.
Update conflict resolution.
Update conflict resolution.
Cleaned up conflict resolver.
Updated MD5SUM.
Typo.
Update md5sum.