Merged ClundXIII/NavEditor master
Areas Manager -> Bootstrap-Klassen
Revert "Areas Manager -> Bootstrap-Klassen"

This reverts commit 28280e81898f4b624868e3d7030465d6efb4274b.
Revert "Merged ClundXIII/NavEditor master"

This reverts commit 713964d189315a06821fe9c3fe8ac074d33f7848.
Merge https://github.com/RRZE-Webteam/NavEditor
bugfix