If the value was never enabled or disabled, the settings show "Restrict
username enumeration to groups" as disabled. However, in some components
it was enabled by default, which caused an inconsistency in the
behaviour with respect to the settings, for example in the contacts
menu.
Signed-off-by: Daniel Calviño Sánchez <danxuliu@gmail.com>
This adjusts the contacts menu to also support searching by email address which is relevant in scenarios where no UID is known such as LDAP, etc.
Furthermore, if `shareapi_allow_share_dialog_user_enumeration` is disabled only results are shown that match the full user ID or email address.
Signed-off-by: Lukas Reschke <lukas@statuscode.ch>