Replace The Loop IdP with Crystal Identity

Metadata: replace idp.theloop.school.nz (The Loop - Nelson Marlborough Loop)
with idp.crystal.school.nz (Crystal Identity)
Del WS-Federation roles from fs.stpeters.school.nz

Remove WS-Federation (ADFS) specific roles from St Peter's school IdP
(http://fs.stpeters.school.nz/adfs/services/trust) to make the metadata
validate with the usual set of schemas used in Shibboleth/SAML deployments.
Organizations: fix XML Namespace prefix

Fix the XML Namespace prefix for Organization entries not to rely on default
global XML Namespace when the EntityDescriptor is using explicit prefixes.
Organizations: fix OrganizationName to DNS domain

Fix the OrganizationName to be the machine-readable name of the Organization (DNS domain).
The human-readable field is OrganizationDisplayName.
Organizations: fix OrganizationURL URL syntax

Fix the syntax used in OrganizationURL URLs - include protocol and a path component (at least a single slash).