Moved header image into its own div.
Disabled popup.
Merge branch 'master' of github.com-steinmuehle:steinmuehle/stm

* 'master' of github.com-steinmuehle:steinmuehle/stm:
  Moved header image into its own div.
Merge branch 'develop'

* develop:
  Disabled popup.
Replaced course schedule with new data.
Added a simaller version of the header image.