add multi-user-editor

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>
add skript with repos

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>
cleanups doku

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>
update abgabe to clone into subdir

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>
begin pruefungs-skript

Signed-off-by: Nico Schottelius <nico@bento.schottelius.org>