cover all event listeners.
Merge branch 'test-views-WholePage' into master-test
create a simple RowCompositeTest class.
Merge branch 'test-views-basic-RowComposite' into master-test
implement addListerner function in  AstractMockAsyncTwitter.java
implement getListener function in ConcreteMockAsyncTwitter.java
implement all event Tests in TwitterControl.
Merge branch 'test-controls-TwitterControl' into master-test