anchor.diff:              A comprehensive list of possible errors:
               - `USER_UPDATE_INVALID_PASSWORD` if the supplied `password` does not satisfy the given criteria (regex: ^(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9]).{8,}$)
               - `USER_UPDATE_INVALID_EMAIL` if the supplied `email` is not a valid email
  -            - `USER_UPDATE_INVALID_RANK` if the supplied `rank` is not a valid rank (regex: ^[1-3]$)
  +            - `USER_UPDATE_INVALID_RANK` if the supplied `rank` is not a valid rank (regex: ^(10|50|100)$)
               - `REQUEST_MALFORMED_DATA` if the submitted data in the request body does not match the Content-Type or is unparseable
   
   + Response 401 (application/json)
  
positive.code: 
  ## User list [GET]
  
  Retrieves a list of users. The result can be adjusted by additional, but optional parameters. This operation requires moderator permissions (rank 2) or higher.
  
  + Parameters
      + offset (number, optional) - How many entries to skip for the output, can be used for pagination.
  
negative.code:         
  ## Update user [PUT /{name}]
  
  This method can be used to edit an user. If no `name` is supplied, the currently authenticated user is chosen as target. By using this method it is also possible to change the rank of users. Changing the rank as well as other users in general can only be done by admins (rank 100) though.
  
  + Parameters
      + name (string, optional) - The `username` of an user which is then taken as target for the operation
  
  + Request (application/json)
      + Attributes (object)
          + email: `some-new-chosen@email.com` (string, optional)
              
              The new email address which should be used for the user. It has to be a valid email.
  
          + password: `ask23hsDja_231l` (string, optional)
  
              The new password for the user.
  
              Regex: ^(?=.*[a-z])(?=.*[A-Z])(?=.*[0-9]).{8,}$
          
          + rank: `50` (enum[number], optional)
          
              The new rank which should be set for the user. Setting this parameter does only result in a change if the currently authenticated user has the permission to change ranks.
  
              Regex: ^(10|50|100)$
          
              + Members
                  + `10` - Normal user
                  + `50` - Moderator
                  + `100` - Admin
              
  + Response 200 (application/json)
      + Attributes (object)
  