SAML SSO improvements

Improvement
  1. We've published the SAML SSO activation process in a support article.
  2. The ACS & Entity ID per team was previously only available via support but can now be found on your Team Settings page via More -> Settings.
  3. We've added a Service Provider initiated flow by detecting the domain of the email address automatically (previously SSO was IdP-initiator only)

SAML SSO improvements