esl-9075. Fix downloadCompletionReportExampleTest
Added test for GroupManagementExample and fixed the SignerConverter
Merge branch 'master' into dev
merging csv completion report back from master.
Told c# to copy the signers.properties file to the output folde.r
Merged new schema, fixed some of the bugs it introduced.
Merged dev, to get fixes to attachment requirement example and test.
Hacked a couple of schema objects to implement needed functionality.  Specifically Document and FieldValidation.