Add acceptance test for Groups

Add automated acceptance tests for Group test cases. Test cases can be
modeled after the associated selenium IDE test case name list below.

Acceptance test selenium IDE cases are found in
mifos/trunk/mifos/test/testscripts/Selenium/acceptance/

1 Creation of a Group in Partial Application status and then moving to Pending
Approval status.(CreateGroupTC001_009.html
)
2 Creation of a Group in Pending Approval status and then moving to Active
status. (CreateGroupTC012_013.html
)
3 Moving Group from one Branch to another (by moving to a center of a different
branch) ("GroupCreationTC20_21.html
"
)

Acceptance tests should follow these guidelines:
http://www.mifos.org/developers/wiki/WritingGazelleAcceptanceTests and following
the working examples for Collection Sheet entry found in the Gazelle (trunk)
code under acceptanceTests.

Cheetah user tests can also be reviewed to get an idea of how to write tests:
mifos/cheetah/trunk/acceptanceTests/src/test/java/org/mifos/test/acceptance/user