The chosen plugin stays. Fixed spacing issues. Added a border around code snippets and inline code snippets to make them legible.
The dropdown nav stays in a side bar which will later include a ToC underneath it, that way, grouping all the navigation parts under one hierarchy.
Need opinions on this and so, not merging with master directly :)
Also: The activity stream can be added into the footer
@kgrz Thanks, I made the body a little bit wider, but this looks much cleaner.