Added and linked css-file
changed font-families

Signed-off-by: Benjamin Brockhaus <tulatex@burning-world.de>
basic first draft of a stylesheet

Signed-off-by: Benjamin Brockhaus <tulatex@burning-world.de>
Added and integrated images
-banner
-mo_admin
further work on the stylesheet

Signed-off-by: Benjamin Brockhaus <tulatex@burning-world.de>