mostly navigation and appearance changes.

mostly navigation and appearance changes.

- no longer showing an expanded tree of all course items; it's
  overwhelming in full sites. Only show first level elements;

- cleaned up the in-course breadcrumbs a bit;

- fixed page width to a 960px layout;

- put course-name and department information in a coloured band to
  separate from the course content.

- etc.

git-svn-id: svn://svn.open-ils.org/ILS-Contrib/servres/trunk@122 6d9bc8c9-1ec2-4278-b937-99fde70a366f