Do not set timeout twice in settings.defaults
Fix SITE_NAME for Abschluss-Instances
Add makesuperuser command
Reference a git repo with prebuilt ace sources
Improve default rating script

thanks to fmerz for the suggestion. Closes #183
Merge branch 'master' of github.com:KITPraktomatTeam/Praktomat
Merge branch 'master' of i44sun3:praktomat