Change IMS subscription logs to refer to registration data
Update version number
Merge pull request #23 from Metaswitch/sto851

[Reviewer AMC:] [DO NOT MERGE] Change IMS subscription logs to refer to registration data
Add SAS log for HSS returning an IRS that doesn't contain a SIP URI
update version number
Merge pull request #24 from Metaswitch/police_irs

Reviewer Ellie: Police irs