Messages, Basic, Implicit - Explicitly require "sub" claim to be returned from UserInfo endpoint

[Michael Jones]

Add this sentence to the "UserInfo Response" sections of Messages, Basic, and Implicit: "The "sub" claim MUST always be returned from the UserInfo endpoint."

[Michael Jones]

Fixed #713 - Explicitly require "sub" claim to be returned from UserInfo endpoint

→ <<cset c4c4e5d96e67>>