[keycloak-dev] Proper handling of read only users from user storage
We should solve the following issues for 2.5.0:
https://issues.jboss.org/browse/KEYCLOAK-3060
https://issues.jboss.org/browse/KEYCLOAK-3613
The current behavior of showing a form and throwing an error is not very
elegant and this should be resolved before as part of user storage SPI work.