Additional fixes from code review
Add high-level events for Ralf
Fix blank lines
Merge remote-tracking branch 'origin/sas_integration' into ralf_sas_work

Conflicts:
	modules/cpp-common
Point at cpp-common sas-integration
Merge pull request #23 from Metaswitch/ralf_sas_work

[Reviewer: Graeme] SAS events for Ralf