Cut down the CSS

[ggrossetie]

Currently we are loading 8 stylesheets and we also have inline styles:

Neo4j

• https://neo4j.com/docs/developer-manual/current/css/console.css
• https://neo4j.com/docs/developer-manual/current/docbook.css
• https://neo4j.com/docs/developer-manual/current/css/extra.css
• https://neo4j.com/docs/developer-manual/current/css/chunked-base.css
• https://neo4j.com/wp-content/cache/autoptimize/css/autoptimize_25957e0dcc6b52aff2a9d4fcb422b6bc.css

Third-party

• https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.1.0/css/font-awesome.min.css
• https://neo4j.com/online_training/cypher-gadget/libs/jquery.modal.min.css
• https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css

Do we need all of them? Can we produce a single minified stylesheet to apply on course?
Since the page are pretty much static, I believe that we could use https://github.com/uncss/uncss to remove unused rules?

//cc @adam-cowley

[jexp]

I think this should be addressed as part of the re-styling. But yes agreed on uncss.