Provide Email alert for Deleting Custom EvenT Type

Problem Definition

When a "Custom Event Type" completely deleted from a Calendar notifications are not sent out via e-mail like they are for singular events nor is a backup of those events sent like when one deletes the whole calendar.

This causes problems as we do not have restrictions nor audit trails for Team Calendars. A user can come in and delete an entire calendar with no record.

Suggested Solution

Provide an e-mail notification and backup of the calendar during deletion.