Add langs to category pages
Add multi-language titles to home. Remove weird inlinlining of category titles
Show whichever title is available on the admin dashboard
Merge remote-tracking branch '18F/dev' into feature/slim_generic_templates

Conflicts:
	app/assets/stylesheets/all/style.css
	app/views/articles/article_type.html.erb
	app/views/categories/show.html.erb
	app/views/home/_article.html.erb
	app/views/shared/_articles_sidebar.html.erb