Bootlint integration

Created by: soullivaneuh

As Gitlab theme is based on Twitter Bootstrap, it could be useful to have bootlint on dev env in order to fix and optimize bootstrap integration.

Bootlint is a tool that checks for several common HTML mistakes in webpages that are using Bootstrap in a fairly "vanilla" way. Vanilla Bootstrap's components/widgets require their parts of the DOM to conform to certain structures. Bootlint checks that instances of Bootstrap components have correctly-structured HTML. Optimal usage of Bootstrap also requires that your pages include certain tags, an HTML5 doctype declaration, etc.; Bootlint checks that these are present.

Related repository: https://github.com/twbs/bootlint

Bootlint will produce error and warning on chrome debugger.

I disable alert notification to not be so annoyed while working onto another fix/feature.

What do you think?

Thanks.