Creating a new page for MDRPI, modifying all the documentation to point to it.

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@3346 44740490-163a-0410-bde0-09ae8108e29a

docs/aggregator2.txt

@@ -67,22 +67,8 @@ The aggregator can be configured with the following options:
     The path to the certificate can be absolute, or it can be relative to the `cert`-directory.
 
 `RegistrationInfo`
-:   Allows to specify information about the registrar of this aggregate. Please refer to the
-    'SAML V2.0 Metadata Extensions for Registration and Publication Information' document
-    for further information on this topic. This option accepts an array with the following
-    options:
-
-:   -   `authority`: The unique identifier of the authority that registered the entity.
-    It is recommended that this be a URL that resolves to a human readable page describing
-    the registrar authority (e.g., the registrar's home page). This parameter is REQUIRED.
-
-:   -   `instant`: The instant the entity was registered with the authority. Time values 
-    must be expressed in the UTC timezone using the 'Z' timezone identifier. This parameter
-    is OPTIONAL.
-
-:   -   `policies`: The policy under which the entity was registered. An indexed array with
-    URLs pointing to the localized versions of the policy. Each index will be used as the
-    language identifier. This parameter is OPTIONAL.
+:   Allows to specify information about the registrar of this metadata. Please refer to the
+    [MDRPI extension](./simplesamlphp-metadata-extensions-rpi) document for further information.
 
 
 ### Aggregator source configuration