Fixed NullPointerException error when creating a social group head (issue 63)
Fixed NullPointerException error when creating a social group head (issue
63)

TatianaRoma/COS576,SwissTPH/openhds-server,TatianaRoma/COS576,SwissTPH/openhds-server,SwissTPH/openhds-server,TatianaRoma/COS576