Fix the bug of re-pushing other existing bound cloud applications after deleting one

**Phenomenon of the Bug:**
- Press ‘Remove’ in the right-click menu of some cloud application in the application viewer, and confirm to delete it:
![issue7_deletecloudapp_confirm](https://cloud.githubusercontent.com/assets/7316500/4456005/fad3e6fa-4885-11e4-8e0c-38292a236388.PNG)

- It will trigger other existing bound cloud applications to re-push after deleting the selected cloud application:
![issue7_deletecloudapp_triggerpush](https://cloud.githubusercontent.com/assets/7316500/4456012/10ca1d94-4886-11e4-833e-9c9061c71b3b.PNG)

**Effect of the Modifications:**
It will do nothing after deleting a cloud application in application viewer.