New placeholder icons, cleaned up fragment_building_display.
WhereAmIFragment now opens buildings with BuildingDisplayListAdapter
Began using Koush's Ion library for JSON and Image loading
Changed the BuildingDisplayFragment to use a serialized Place object instead of multiple strings. Changed the place getters and setters as well as fields to reflect camelCase. Added highlighting for navigation drawer items as well as extra spacing. Fixed the ExpandableListView to use HashMaps instead of ArrayLists to ensure child items are gotten in the correct order.