Refactored MapBounds from MapView
Added POICollection.getBounds

We now bound collections with a single polygon by the whole polygon.
Documented the rules about how we calculate map bounds for a group of
POIs.
Added padding to configuration
Added museums
Added museums, changed zoom levels
Merge branch 'master' of github.com:ox-it/maps.ox

* 'master' of github.com:ox-it/maps.ox:
  Added padding to configuration
  Added POICollection.getBounds
  Refactored MapBounds from MapView
  Updated to our custom mapbox
  Only trigger EVENT_POSITION_UNPAUSED after positionInterval is set
  Add all results to map bounds if not tracking user position
  Hide distances in search results if not tracking user position
Updated style to make buildings less purple, and smoother outlines for university shapes
Updated mapbox map ID
Merge branch 'master' of github.com:ox-it/maps.ox
Merge branch 'master' into gh-pages