Lean css bis

Removing more stuff from CSS/HTML that we don't use.

* Remove unused nav toolbar styles
* Sign between breadcrumbs is more elegant
* Remove unused article classes
* Remove unnecessary article secondary column inner block
* Delete unused helpers
* Delete unused facia extends
* Deprecate type-7 and type-10

![ ](http://gifs.joelglovier.com/smooth/crazy-rock-climbing-move.gif)
You sure about this? /cc @ironsidevsquincy