Update cpp-common
Merge pull request #19 from Metaswitch/sto536

Update cpp-common
Integrate with SAS aware diameter stack
Fix ralf UTs
Take latest cpp-common
take latest cpp-common
Log chronos HTTP flows at detail level
Move BillingControllerHandlerFactory into the header file (because it is a template)
Take latest cpp-common
Update cpp-common
Merge remote-tracking branch 'origin/master' into sas_integration
Update to reflect changed ChronosConnection API
More fixes
Merge pull request #21 from Metaswitch/fix_chronos_connection

[Reviewer: Alex] Fix Chronos connection
Merge remote-tracking branch 'origin/dev' into sas_integration
Take latest cpp-common
Take latest cpp-common
Merge remote-tracking branch 'origin/sas_integration' into ralf_sas_work

Conflicts:
	src/handlers.cpp