first docking prototyp

@tomkralidis: with some xml hacking and some code changes, I got the dialog workings as a docking widget.

You can only dock it to the right of the map currently.

Not sure if I find it ok or not... Maybe we should reshuffle bit first, or maybe there is just too much content to show, to make it a dockwidget in one of the borders (would be nice to be able to dock it in centre).

Anyway: plz have a look and let us decide if we want to go like this, or that we should review the full ui first to make it better to put in a dock.