Create mobile CSS

[adamcik]

A mobile style sheet should probably be created to allow for better zooming and handling of the page on advanced mobile devices like iPhones and Andriods.

To further increase the mobile experience a mobile page that only provides a given days schedule would be a nice step forward. Likewise providing a page with only the course-, lecture-, exam- and deadline-list might be useful. If this last step is taken these screen "boxes" should probably be rewritten to template inclusiontags.