Created NL versions of inc

NL versions of head, header, footer includes and default layout file
have been made.
There's also a border-nl version for test purposes
update footer html structure
update head structure
update css and config file

Update css links and config.yml
update header and nav

Created html structure and nav include for the header
Assets

Added the complete assets folder to the site root
Minor CSS hacks.

Minor (temporary changes in css files) for fontawesome.
TO DO: search a solution for the path url('../f/fontawe..... )

TO DO: check closing divs for border-nl
Col problem resolved

Col spans resolved and import img/ folder
background problem resolved
img problems resolved
convert less to css
import js folder
renamed border-nl
merge feat/05 to dev
Merge branch 'feat/06-js' into dev