issues with updating and sving profile information

[ChristianStrotkoetter]

If updating / saving profile information via "User account"/"Benutzerkonto" there are some issues:

• Some browser pre-fill the password component, if users click their profile to update any information. This yields to a warning concerning a missing confirmation password ("Password and Password Confirm not Match"/"Keine Passwortübereinstimmung"). Furthermore, if the password is entered twice (password and password confirm), the user is logged out, which shouldn't be the case. Maybe separate password information from any other profile information?
• It is not required to choose a gender when creating sccounts (admins via groups) or during the registration process (self registration for new users). If users want to update any profile information and there is no gender chosen yet, the user than has to choose a gender. This field should be optional all the time.