Community call presentations added to project
Merge pull request #253 from VesaJuvonen/dev

Community call presentations added to project
Fixed default.aspx  page. namespace was incorrect
Merge branch 'dev' of https://github.com/OfficeDev/PnP.git
Implemented token refresh + fix to close web requests + fix to pass idp urn correctly
Updates to tenant level site exists methods. Made one obsolete plus created test for the other one.
small changes to SAML support
Documentation updates