keyword "knowledge" is first node and has attribute global, or local.
structure trees were repaired accordingly
Configuration does not set global knowledge anymore
unity update
First tests done, french and chemistry works in their rooms.
Still to be tested completely.

Added folder "theme", which now contains all theme-related files and folders (such as Bunsenbrenner, Bismarck, ...) that were previously found directly in config~

menu and frontal scene are not checked yet.

known issue: students turn in wrong direction
teleport areas are always visible

known issue:
- random animation point does not work because of new animator controller
- layout of frontend does not render correctly
- buttons in frontend are hard coded, not button specific
- Animations need to be put into controller again

known issues:
- random animation points do not work
- Website does not consider every Student
- frontal Scene was not tested yet
- Menu was not tested yet

known issue: "Stö" is not implemented, no fitting animation yet, posters do not appear by now

Cleaned XML-Tree and script to clean a messy one

Loader and converter work