Prompt users whether to delete published application when deleting a workspace project

[nierajsingh]

When deleting a project that is mapped to a published Cloud module, prompt the user whether to delete the application or not.

This implementation could reuse the same replace method in CloudFoundryServer as used by the "Unmap Project" feature:

https://github.com/cloudfoundry/eclipse-integration-cloudfoundry/blob/5b85a860efffe62426dc12235a0d60e586f1fdb2/org.cloudfoundry.ide.eclipse.server.core/src/org/cloudfoundry/ide/eclipse/server/core/internal/CloudFoundryServer.java#L583

This was originally raised via a Pull Request from HuaweiTech:

#27

[cf-gitbot]

We have created an issue in Pivotal Tracker to manage this. You can view the current status of your issue at: https://www.pivotaltracker.com/story/show/91134364.