Create delegates for Config gas tables

[Dirk Hohndel]

On Mon, Oct 27, 2014 at 10:12:44PM +0100, Anton Lundin wrote:
> These patches was as far as i manage to get in my delegate handling.
> These ones looks ok, but the ComboBox one would be better if it saved
> the string value instead of the numeric value after you clicked on it,
> and you managed to translate that to the numeric value somehow in the
> populateDeviceDetails-methods.

Yeah, this looks funny. Maybe one of the Qt experts can tell us what's
missing to always show the string representation in the table.

Oh, and I still think the way the tables are laid out is kinda goofy...

/D