UI improvements for the Cards tab

[C0rn3j]

pavucontrol-qt	pwvucontrol

I came here to ask about two things, first is an ON/OFF checkbox for cards. Due to ValveSoftware/csgo-osx-linux#3832 I sometimes frequently have to disable and enable my card, this is a bit unwieldy in pwvucontrol, in pavucontrol-qt I can just doubleclick a checkbox.

And the second thing would be to use two lines per card, allowing it to have the profile space evenly, currently the combo boxes are placed on a random X position with the varying names.

[saivert]

So the off option must be removed from the dropdown and a checkbox acts like this instead?
Is that more convenient?

[C0rn3j]

That would definitely be more convenient for me, and it looks better to me as a bonus.