Updated vars to new syntax and removed vendor-prefixes.

Preparing for use with Myth.
Let myth handle combined.css instead of apache
Update from apache mod_includes to Myth & @import's
Make use of CSS-vars. Replace wherever reasonable.
Use style.out.css and combined.out.css to avoid low browser support for CSS vars
Myth output files.

These will be updated frequently. See the regular versions of files for change
descriptions (these are generated files).
Redefine 'TITLE' in head.

Used when updating <title>