Disable text selection

[Bert-Proesmans]

Hello

I was playing Adarkroom earlier today and i just found out it's on GitHub.
I would like to suggest a fix to the game so the players won't experience this nasty blue color when clicking too much on the same button.
IThere was a ::selection property set to invisible, but i suppose it's for something else than text selection since it doesn't change the color of the selected text.

My HTML/CSS/Javascript knowledge isn't that great so i just throw in CSS declarations which should work according to StackOverflow questions:
user-select: none;
-> works on roughly 80% of the browsers being used
(source: http://caniuse.com/#feat=user-select-none )

alternative style codes:
-webkit-touch-callout: none;
-webkit-user-select: none;
-khtml-user-select: none;
-moz-user-select: none;
-ms-user-select: none;

I'm also not sure if these properties are applicable on the body/wrapper element so the childs could inherent it. Maybe someone of you guys can code my suggestion to life?

[Continuities]

I thought I already had user-select:none in there... If not, it's a good idea. I'll take a look at the CSS tonight.

[Bert-Proesmans]

Thanks!

Although I should have checked the full source before posting this to save you from the work, apologies.

[Continuities]

As I suspected, I already have user-select:none on the button class. Doesn't seem to work %100, though... What a pain in the butt.

[groteworld]

I've had to deal with this issue before, the PR is what I've used to fix this issue.

[Bert-Proesmans]

i'm glad this issue gets fixed.
Thanks grotr & Continuities!