Disabled buttons

[IntegratedQuantum]

With a reference use-case (showing the social settings that cannot be changed when in the world, previously they were hidden, now they are shown as disabled):

To achieve this I made a small change to the button interface to allow for optional arguments

replaces #2008

fixes #2556

[tillpp]

Please rework the design of the grayed out button. (and honestly it's terrible in its current state)

[OneAvargeCoder193]

I think it would make more sense if disabled buttons always drew the pressed texture

[OneAvargeCoder193]

[Wunka]

I don't like this. This looks more like a bug then a disabled button feature

[Argmaster]

Full gray scale is the answer you are looking for.

[Crepestrom]

if you look at my recolored slots pr you can use that to make darker slots

[IntegratedQuantum]

@careeoki can you help me with the texture once you are back from your trip?

[careeoki]

@careeoki can you help me with the texture once you are back from your trip?

I was home monday so I can help right now: IntegratedQuantum#1

[IntegratedQuantum]

I think a good change to make it feel even more disabled would be to make the text a bit darker:

Sadly that is not possible currently. I could make it transparent, but it looks kind of odd:

[IntegratedQuantum]

Alright here we go:

[IntegratedQuantum]

And it works on icons too