* feat(logging): add PV_LOG_LEVEL environment variable to set backend log level
* feat(ldap): Adding a more verbose logging output to debug LDAP issues
* fix(ldap): fixed user logins with special characters within the users dn by switching to ldapts
* feat(ldap): made the member of and email attribute names configurable
* fix(ldap): properly handle email like usernames and fixing #601
* Revert "fix: disable email login if ldap is enabled"
This reverts commit d9cfe697d6.
* feat(ldap): disable the ability for a user to change his email when it's a LDAP user
* feat(ldap): relaxed username pattern by allowing the @ character in usernames
