Added the self.last_insert_id method.
Added the self.last_insert_id method.

orta/usesthis,ivuk/usesthis,waferbaby/usesthis,holman/usesthis,MjAbuz/usesthis,waferbaby/usesthis,MjAbuz/usesthis,MjAbuz/usesthis,orta/usesthis,ivuk/usesthis,holman/usesthis