Allow SAML Authentication to work across (sub) CM web applications

Under Community Review

Currently it is not possible to use SAML authentication over a wider scope than just the WebUI web application on the Content Manager (see https://tridion.stackexchange.com/a/19604/54). It would be good if this could be extended to, for example custom pages, running in their own application context under the main SDL Web IIS web application.

Under Community Review