added delete an inbox test
added delete an inbox test

openAgile/CommitStream.Web,JogoShugh/CommitStream.Web,openAgile/CommitStream.Web,JogoShugh/CommitStream.Web,JogoShugh/CommitStream.Web,openAgile/CommitStream.Web,JogoShugh/CommitStream.Web,openAgile/CommitStream.Web