Replace stylelint with a Sass-aware linter

[pixelastic]

Our stylelint check is useless now that we are using Sass. We should use a linter aware of Sass syntax.

https://github.com/brigade/scss-lint should work.

Any other in mind?

[redox]

LGTM 👍

[pixelastic]

Actually scsslint only works with .scss syntax. We could use sasslint but I'll first wait to see if we stay on Sass or move to Scss (cf. #290)

[redox]

https://github.com/brigade/scss-lint should work.

Actually, this is a ruby gem and the NPM package is actually only a JS binding that requires you to have it -> so I don't think it's a good move. What about https://github.com/sasstools/sass-lint (compliant with SCSS) ?

[pixelastic]

@redox That's what I just said one message above :)

Edit: Oh, ok, same conclusion but not for the same reasons.

[vvo]

was done and moving to waiting for release