Story 1890. Changed admin tool integration test to unit test. Changed test/LdapConfig.properties file to use the canfar test in devLdap.

Story 1890. Fixed unit test and integration test errors. The tests now use the test/LdapConfig.properties file.

Story 1869. Updated codes based on Brian's second code review. Mock UserPersistence is still not returning the programmed exception.

Story 1869. Updated code based on Brian's code review comments. A couple of unit tests are still not working. The mockPersistence object does not seem to throw an exception as expected.

Story 1869. Update LdapUserDAO to throw a UserAlreadyExistsException if the email address is associated with more than one user when we attempt to append a user.

Story 1869. Added unit test for the POST operation. Test for the happy paths will be the responsibility of the integration test in ac_ws.