Deleted Questionnaire responses should go to the Recycle Bin

The Recycle Bin tool is extremely handy and has reduced our need to access course backups to restore accidentally deleted data. 

In order to increase the coverage of the accidental deletion safety net this provides, we would like to see deleted questionnaire responses captured into the recycle bin so that they could easily be restored back to where they were in a click.

Questionnaire is frequently used for capturing assessment related information so this is particularly relevant area for data recovery.