Function panel: Share position with specific external app
[Extracted idea from http://help.locusmap.eu/topic/share-position-with-external-app ]
So far, external apps added to the function panel are just started. It should be possible to also pass the current map position (center) to the app, just like Share > Other map apps > Select does. What save a lot of taps (and looking for the right icon) for much needed calls, like passing a destination to a car navigation app.