[BugFix]Deleting bound cloud application quietly when deleting local bound project

**Phenomenon of the Bug:**
- Delete a local project which has a bound cloud application:
![issue6_deleteaboundproject](https://cloud.githubusercontent.com/assets/7316500/4455260/0d97f17c-487d-11e4-8012-d27288d364b4.PNG)

- Regardless of whether to retain the contents of the hard disk or not, after pressing the 'OK' button, the project will be removed from current workspace, meanwhile the bound cloud application will be deleted quietly as well:
![issue6_theboundcloudapplicationdeletedquitely](https://cloud.githubusercontent.com/assets/7316500/4455295/87242ed4-487d-11e4-97c4-69fabfb5f3f7.PNG)

**Effect of the Modifications:**
- During the process of deleting the local bound project, a dialog will be presented to as user whether to delete the bound cloud application or not:
![issue6_modifiy_confirmtodeletecloudapplication](https://cloud.githubusercontent.com/assets/7316500/4455330/00bc37e6-487e-11e4-9d58-91168f4452fa.PNG)

- It will delete the related cloud application If choosing 'OK'. If 'Cancel' is chosen, It will refresh the application viewer and the cloud application will be shown as unbound:
![issue6_modifiy_refreshcloudapplication](https://cloud.githubusercontent.com/assets/7316500/4455335/0ec73912-487e-11e4-897f-594dcdaa72a6.PNG)