[webauthn] new commits pushed by vijaybh

The following commits were just pushed by vijaybh to 

* refine user verification and authz gesture definitions, add Test of 
User Presence (#365)

* refine user verif and authz gesture, fixes #357, improves #358

* further polish #357

* fix build: add comma to refs

* improve ceremony dfn, add Angelo to ACKs

* refine user verification dfn

* fix build by adding the proverbial missing comma...

* polish 'user consent' dfn per jcjones comment
  by =JeffH

Received on Wednesday, 1 March 2017 23:45:17 UTC