Settings
========
-provider_name*: a unique name for this authentication provider.
+provider_name*: This is a identifier designated to the connection.
+ It's how StatusNet will refer to the authentication source.
+ For the most part, any name can be used, so long as each authentication source has a different identifier.
+ In most cases there will be only one authentication source used.
authoritative (false): Set to true if LDAP's responses are authoritative
(if authorative and LDAP fails, no other password checking will be done).
autoregistration (false): Set to true if users should be automatically created