Admin: improve custom auth user model compatibility when editing users
Admin: improve custom auth user model compatibility when editing users

shawnadelic/shuup,suutari/shoop,hrayr-artunyan/shuup,shawnadelic/shuup,shoopio/shoop,suutari-ai/shoop,hrayr-artunyan/shuup,suutari-ai/shoop,shoopio/shoop,suutari/shoop,hrayr-artunyan/shuup,shawnadelic/shuup,shoopio/shoop,suutari/shoop,suutari-ai/shoop