[Bug-gnubg] Setting default board colour scheme

[Ian Shaw]

I wrote in another post that it would be nice to be able to save the current 
colour scheme as the default without disrupting all the other default settings. 
It was pointed out that .gnubgautorc stored everything when do Save Settings.

Now that \.gnubg\boards.xml exists and allows the user to save settings, would 
it be possible to save the default board in here, instead of in .gnbgautorc? 
You could add a button to the popup "Save as default" and overwrite the 
"Default" entry in boards.xml.

--Ian