[Request] Optional Image De-Duplication built in

[rickywiens]

I think it'd be cool if we could optionally (Config file) automatically de-duplicate images.

For example, if you uploaded the same image twice, there'd be two entries in our imager table, but they'd both point to the same image on the server. This is doable by storing a small hash of every image that is uploaded in its' row in the table.

[atrauzzi]

Great idea, I'll get this in next time I've got my hands in here.