V4 add csslint to build

[nschonni]

Initial pass at adding back in the CSSLint validation.

• Turned off all failing rules, but they should be reviewed again
• 2 PRs sent upstream to fix linting issues that can be disabled once they are merged
• Found Twitter wasn't being imported properly, so it was added back in when enforcing the RTL text-indent rule

[LaurentGoderre]

The sprite one should be fixed. What is the other one?

[nschonni]

It was in issue with Magnific and the PR is merged, just need a new release.

[LaurentGoderre]

Perfect!

[LaurentGoderre]

Can you rebase?

[LaurentGoderre]

Is this ready to merge?

[nschonni]

I've removed the "zero-units" exlusion now that I've confirmed the grunt-imagine patch worked. I think this is good to go as long as Travis passes this time 😉

[LaurentGoderre]

How do you drop a commit from a rebase? Did you create a new branch and manually cherry pick?

[thomasgohard]

@LaurentGoderre To drop a commit as part of a rebase, you can run git rebase -i and simply delete the line for the commit you want to drop.

[nschonni]

I actually just did an interactive rebase and used the e or "edit" option to change the commit. If you delete the line during rebase then you can drop a commit from a branch.