Added managed bean web app example to test JERSEY-1576

Change-Id: I7064f72d6a6c313e97cb8c7ff4174aa8e0fbec71
JERSEY-1542: Response#hasEntity should throw IllegalStateException when called on closed Response

Change-Id: I4d8c1cd785e89cb2122262901a5cb9c53f9b1c14
Merge "Added managed bean web app example to test JERSEY-1576"
Merge "JERSEY-1542: Response#hasEntity should throw IllegalStateException when called on closed Response"