Adds Basic Styles for seantis.dir.base and seantis.dir.events.

A few things to note:

    - The idea is to run this initial styling by Nose, since they have
      not yet defined the design of the Veranstaltugnskalender. This
      commit merely makes the design usable.

    - Kml download links are disabled for now. Those links come with
      text now, but should come with the icon font in the future.