better connection handling in QML UI

[Dirk Hohndel]

> On Jul 17, 2017, at 1:32 PM, Dirk Hohndel <dirk at hohndel.org> wrote:
> 
> I know it's getting late in Europe....
> 
> 432 should fix the problem, your dive computer should get recognized - but since I don't have an OSTC, I can't really test this 

Silly me - I told one of my Android devices that it's name is now OSTC3#123456
I paired with it and voila, things work exactly as planned. 
The fake dive computer gets recognized as OSTC 3 and the address is correctly filled in.

/D