Linked in a placeholder usermanagement file
Beginning of usermanagement page
Merge branch 'master' into UserManagement
 * Rework of user handling system
 * Added possibility to update a existing user

 * Start on input validation
 * Started adding comments where sql-attacks might come from
 * Fixed bug with close-issues

 * You can now change passwords for all users
 * You can now delete users
 * Added support for adding new users