LPS-38138 - make form navigation horizontal for mobile

http://issues.liferay.com/browse/LPS-38138

Hey Nate,

I added some style related stuff not on the ticket. CKEditor was overflowing its container in the blog portlet on webkit browsers due to fieldset. I added a workaround for it. I tweaked some styles for the two gray boxes above ckeditor to make it span the whole column width. I also decided not to use respond-to because it creates a media query for each respond-to statement. I thought it would wrap it all into one media query but I don't think they added that feature yet.  

Patrick