Allow Enabling/Disabling Event Actions

If I need to update an event action or add a new one, I either need to do this after normal business hours or rush through the update because the server is live. I would like to be able to toggle enable/disable at the action level (vs the entire event), so I can make changes that don't get applied until I re-enable it.

For updates to an existing event action, the action should maintain the old/current behavior until the action is re-enabled.