Module settings PoC

@spolu So, here's where I am – ACE inside Breach looks pretty neat!

![screenshot 2014-07-16 a 21 19 00](https://cloud.githubusercontent.com/assets/326577/3604209/0f6447b6-0d1e-11e4-96cd-70faccdc2c4b.png)

The main hurdle I've had is with `core_store`: so far I haven't gotten how it works (!), so I've mocked it up with an in-memory store – let me know how you'd do it. It could be useful to expose a simpler, non-distributed data-store for the time being?

Let me know what you think
@spolu This is a bit fishy... From the module_manager is there a more straightforward way to call methods on the core_store object?