Spelling error in German info-window

[Dirk Hohndel]

> On Jan 29, 2015, at 8:22 AM, Jürgen Frank <tauchen at juergen-frank.de> wrote:
> 
> Hello,
> 
> the window, that’s shown when hovering over the dive-graph shown in German version
> „Durchschnittstiefe bus hier“ instead of "Durchschnittstiefe bis hier“.

Oops. Thanks. Fixed.

> Sorry for this post as I don’t know where to send this change request to.

This is exactly the right place to send this!

/D