[Icon] New App Icon, now using xcassetcatalog
[iOS7] White translucent toolbar
[iOS7] White translucent NavigationBar
[iOS7] Set the global tint color
[Default.png] move to xcasset and generate iOS 7 assets
[MapView] Fix text color of the map scale
[MapView] Enable new mapview iOS7 options
[MapView] Fix Attribution Logo hack on iOS 7
[MapView] Stop forcing the userannotation to be frontmost
[Prefs] Start converting Prefs to a regular tableview design
[Help] Completely remove in-app tutorial
[Store] Remove all IAP/donations code
[iOS7] Remove TransparentToolbar
[StationAnnotations] Flat style, cleanup drawing code
[CityAnnotations] Use blue pins for cities
[MapView] Replace CityGroups with smart zoom
[MapView] Use an OverlayRenderer at high zoom level
[Backend] Make stations request thread safe

This is needed for the (asynchronous) overlay renderers
[Backend] Use a background completion taks for data updates
[Backend] Workaround a crash in citiesController