Coding style and recommendations

The branch includes Niklas changes to show the correct recommendations after an assignment submission and changes the code style and naming to the moodle standard requirements.

requested review from @32khsa1mst

assigned to @miguel.munoz-gil

requested review from @01kuni1bif

added 5 commits

• cee505a2...07cd8123 - 4 commits from branch master
• 1fb6dbf6 - Merge branch 'master' into niklas-dev-recommendation

Compare with previous version

enabled an automatic merge when the pipeline for 1fb6dbf6 succeeds

mentioned in commit 98ce3595

merged