Subsurface-mobile for Android first release

[Dirk Hohndel]

After breaking master and the stupidest time possible and subsequently
fixing it again, I'm planning to make our first release of
Subsurface-mobile for Android either later today or tomorrow (depending a
bit on how much testing the build that I pushed to the Alpha testers this
morning will get). It's also available in downloads/daily as
http://subsurface-divelog.org/downloads/daily/Subsurface-mobile-4.5.2.1050-release-arm.apk

I updated the user manual based on Willem's excellent work, it can now be
found here:

https://subsurface-divelog.org/documentation/subsurface-mobile-user-manual/

Please read / check the user manual, play with the Android app if you have
access to Android devices and then let's try and get this out the door
finally.

Thanks

/D