Fix code style
Merge pull request #2 from boom1992/master

Use the database config
Refactor login route

to deny suspended users.
Implement registration route
Merge remote-tracking branch 'upstream/master'
Implement validation
Implement server-side validation of registration data
Merge pull request #3 from tobiasmuecksch/master

Implement server-side validation of registration data
Add the backend bits for userlists and activating users