CASAuthentication - Add DataController support for CAS proxy authentication.
CASAuthentication - Add DataController support for CAS proxy authentication.

This patch adds a CASProxyAuthenticatedDataController that can be extended
to provide access to web-services that are protected by CAS authentication.

wesley1001/Kurogo-Mobile-Web,modolabs/Kurogo-Mobile-Web,wesley1001/Kurogo-Mobile-Web,modolabs/Kurogo-Mobile-Web,modolabs/Kurogo-Mobile-Web,wesley1001/Kurogo-Mobile-Web