removed the usage of package "ae" since it deactivates most of the "T1"...

removed the usage of package "ae" since it deactivates most of the "T1" seetings of package "fontenc"
--> therefore PDF is now also searchable for Umlauts and hyphanation works as well

git-svn-id: https://svn.mdt.tu-berlin.de/Verwaltung/LaTeX@71 25a4be7b-f1fc-0310-ab71-aec12a0be8aa