* Adds user instance to database by preparing a complete user instance and
* sending it to the EJB. The data set in the controller is being verified,
* e.g. if the user name or email address is not used yet.
+ * <p>
+ * @return Redirect outcome
*/
- void addUser ();
+ String addUser ();
/**
* Edits cuirrently loaded user's data in database.
+ * <p>
+ * @return Redirect outcome
*/
- void editUserData();
+ String editUserData();
/**
* Getter for user name