Move courses around to comply with Grav's I18N.

This should be the final form of the file tree.
It's not perfect, since teachers must be able to read english
to navigate in the directories, but it integrates better with Grav.
1 job from master in 21 seconds (queued for 1 second)
Status Job ID Name Coverage
  Deploy
failed #26
deploy

00:00:21

 
Name Stage Failure
failed
deploy Deploy
Checking out 69ae72a5 as master...
Skipping Git submodules setup
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0curl: (6) Could not resolve host: sh
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0curl: (6) Could not resolve host: sh
ERROR: Job failed: exit code 6