Added network connectivity check to LocationsActivity
Refactored Shared Preferences handling: ready to move out of LocationsActivity
Added SearchResult model class to handle incremental search results
Save/restore search results, page_token and camera zoom level
Refactored: moved PlayServices to utils
Refactored: moved LocationServices to utils
Refactored: moved requestTwitterOAuthToken to TwitterAuthentication
Refactored LocationsActivity onCreate()
Removed PlacesActivity