Added trex-site

Our T-REX service is located under /vara-tjanster/systemutveckling/trex
  It's not displace under services, one has to look for it in
  systemutveckling.
Fixed the highlighting of the active page
  indexOf instead of ===
  css-merge-fix
Added SEO-content for each page (keywords and description)
Removed some wierd <p>tags inside the description-part on vara-tjanster

!!!5 is deprecated, added doctype html
the body tag was not properly indented