[w3c/webauthn] a2a421: redraw fig 3, polish attestation & assertion signa...

  Branch: refs/heads/master
  Home:   https://github.com/w3c/webauthn
  Commit: a2a4210cff823d489bc01248dd52d630b5fb18e9
      https://github.com/w3c/webauthn/commit/a2a4210cff823d489bc01248dd52d630b5fb18e9
  Author: =JeffH <Jeff.Hodges@KingsMountain.com>
  Date:   2017-05-17 (Wed, 17 May 2017)

  Changed paths:
    M images/fido-attestation-structures.svg
    M images/fido-signature-formats-figure2.svg
    M index.bs

  Log Message:
  -----------
  redraw fig 3, polish attestation & assertion signature definitions and prose (#463)

* redraw fig 3 attestation object, fixes #434

* update fig 3 caption

* various attestation text polishing, fixes #395

* fixup [RP] & [RPS] markup

* further RP markup fixes

* fixup terminology markup in abstract

* fixup error code markup

* fixup assertion signature dfn

* various markup and dfn polishing

* further polishing

* more linking & terminology, etc polishing

* fixup fig 2, further polish

* refine regex, fix more RP markup

* polishing #attestation-formats section