MIFOSX-1725: Extend group service with commands
completed by: Mohammed Nafees
mentors: Markus
Extends the group service with commands.
This includes:
- Activate a Group
- Associate Clients
- Disassociate Clients
- Transfer Clients across groups
- Assign a Staff
- Unassign a Staff
- Close a Group
Provide unit tests.
https://mifosforge.jira.com/browse/MIFOSX-1725