Merge pull request #535 from vishwasbabu/mifosx-436

linking loan transactions to branches in preparation for inter-branch ac...
Fix for Retrieve group loanofficers for ASSIGN LOANOFFICER template
Merge pull request #538 from mifoscontributer/mifosx-613

Return valid(not null) officeId for a loan
Change Api call for client transfers
Merge pull request #539 from mifoscontributer/mifosx-547

Change Api call for client transfers
Merge pull request #542 from vishwasbabu/mifosx-436

Mifosx 436
Transfer clients between groups
Merge pull request #544 from mifoscontributer/mifosx-547_c

Transfer clients between groups
update test cases to handle new parameters required for accrual/cash accounting