Refreshing listing causes error

[dgeb]

When loading data directly with App.store.loadMany(), subsequent calls to App.store.findAll() result in the exception Uncaught Error: <DS.StateManager:ember368> could not respond to event setData in state rootState.loaded.

[dgeb]

Resolved error by changing the way data is loaded - see 634c74c

However, we still need to figure out the correct way to refresh the listing...