Mimic behaviour from LDAP users and add a hard limit to 255 characters
Signed-off-by: Benjamin Gaussorgues <benjamin.gaussorgues@nextcloud.com>
Signed-off-by: Benjamin Gaussorgues <benjamin.gaussorgues@nextcloud.com>
Just like for the user backends the group backends should also be
properly done using interfaces.
This adds the interfaces and abstract class to get started
Signed-off-by: Roeland Jago Douma <roeland@famdouma.nl>