Subsurface-moble

[Dirk Hohndel]

So with the latest work from Anton and Grace I think I have automated
builds for Android indeed working correctly and we have an already fairly
useful proof of concept up and running.

If you have an Android device (x86 or arm) please check out the
Subsurface-mobile apk at downloads/daily.

Grace, here are a few comments from me on what we have in master:

1) please reverse the order in which the dives are shown. It feels much
   more natural to do what we have in the desktop app and to show the
   newest (last) dive first
2) instead of expanding the entry for a dive when the user taps on it,
   please use the stackView just as I did for the preferences. That will
   give us a much more natural feeling UI on a mobile device
3) possibly related, when I expand a dive right now and come back, most
   dives will suddenly be in the dive list twice. And the previously
   expanded dive is still "somewhat expanded" (i.e. the size didn't go
   back down to the previous size - but my guess is using the stackView
   will immediately address this issue).
4) on Android the password isn't saved, even if the user checks the box
   that asks Subsurface-mobile to do so

These all seem like things that should be fairly easy to fix.

Thanks for the awesome work. This is quite close to being useable.

/D