check for null on logo url
Added helper for standard scopes (see #287)
fixes https://github.com/thinktecture/Thinktecture.IdentityServer.v3/issues/271
Merge remote-tracking branch 'upstream/master'
Merge pull request #310 from cendter/master

fixes https://github.com/thinktecture/Thinktecture.IdentityServer.v3/issues/271
Changed Host to use new standard scopes
Removed MR and AspNet Identity references
Update to Katana v3 and Jwt v4
Removed name claim from default claims for all tokens
Added ctor to ScopeClaim
Added default ctor to ScopeClaim
Introduced enum to distinguish between identity and resource claims
Prototype of resource claims in default claims provider
Added roles, scopes and client config for idmgr and roles
Filtered possible duplicate claims for access tokens.
Update README.md
Merge pull request #330 from thinktecture/ClaimsUpdate

Claims update
Added google openid auth back - for now.
remove unused file
Merge branch 'master' of https://github.com/thinktecture/Thinktecture.IdentityServer.v3 into develop