Show actual posts location data in the post detail map

* Accept options for map view to set collapsed state, and geojson data url
* Update controller to pass collection/model to mapview,
  and to set collapsed state
* Update collapseMap code to handle initial state, and map code to
  to handle resizes gracefully
* Update post detail css to set a collapsed map to larger than default
  and fix up other CSS for app classes (vs prototype)