Schema.prototype.registerAllKeys fails with data from localstorage

[MaKleSoft]

When trying to load existing data from LocalStorageSource, I'm getting an undefined is not a function in this line: https://github.com/orbitjs/orbit.js/blob/master/lib/orbit-common/schema.js#L418

The problem is that Schema.prototype.registerAllKeys tries to call forEach on an a plain object. Apparently there is a discrepancy between what the function expects as data and what LocalStorageSource actually provides. Specifically, the function seems to expect an array for each model while LocalStorageSource provides an object mapping ids to model objects.

[dgeb]

This code has been completely rewritten. Please open a fresh issue if you have further problems.