Merge dev into feature/47-hhaccount-conversion
Merge dev into feature/47-hhaccount-conversion
Merge dev into feature/47-hhaccount-conversion
Modified all in-execute DML to use optAllOrNone flag so any error causes
a full rollback. 

Resolved #751
Merge pull request #767 from SalesforceFoundation/feature/47-hhaccount-conversion

Feature/47 hhaccount conversion
Merge dev into feature/362-trial-walkthrough