Preferences testing

[Willem Ferguson]

The list is now quite a bit shorter now since, last time round, Ferguson 
was not focusing. Apologies.

Default
Font name and size is saved but not reloaded upon starting Subsurface
Config file shows pref=sans serif 9 pt as selected & saved.
It reloads with Déjavu font size 10 pt.
But the font that it chooses for preference settings upon restart is not 
the same every time, depending on what font was selected.
If one tries with Sans serif 9 pt, save it and restart subsurface, it is 
repeatable on my machine (Déjavu 10 pt).

Language
If I select Dutch, the font changes to Déjavu 10 pt. But the language 
selection works ok.

Graph
Bühlmann is selected initially, but VPM-B option Conservatism not greyed 
out.
The moment when VPM-B is selected then Bühlmann options are greyed out 
and everything works ok. Just the initial setup needs tweaking.

I suspect unused cylinder option not working. Does not affect display of 
additional unused cylinders in equipment panel.

Network
I am sure System proxy requires proxy host name and port ID. Greyed out 
at the moment. Looks ok for HTTP & Socks

Kind regards,
willem