Add extra fields so that all SIP-Digest details are cached and so that SIP-Digest ath doesn't take precedence over AKA
Code review markup
Merge remote-tracking branch 'origin/master' into all_digest_fields
Revert "Code review markup"

This reverts commit 25d1430d79fc64aa34186e4698aacc6543c70472.
Merge pull request #85 from Metaswitch/all_digest_fields

[Reviewer: Andy] Add extra fields so that all SIP-Digest details are cached and so that S...