Bug 1016241 - [Collections App] Populate collections with installed apps

I think you should map maifestURL to a mozApp result and pass that in instead. I do think this mapping should happen within the collection app, but if it makes sense to share something with homescreen [1] we can certainly do so.

[1] https://github.com/mozilla-b2g/gaia/blob/master/apps/verticalhome/js/sources/application.js#L229