[OSX] Auto close moolticute/d on update

[KDederichs]

Missing feature

For convenience sake it would be nice if triggering an update closed the GUI and the daemon

Justification

Currently when updaing (at least on OSX) you have to close the GUI and the deamon manually to replace the .app file. While the GUI is easy the daemon requires you to look it up in the activity monitor.

Workarounds

Close them both manually

[KDederichs]

That's still an annoyance btw :D