adds load from local storage if server is not existing for android.
adds load from local storage if server is not existing for windows phone 8.
adds FileExists method in StorageController.
adds a check on  exists file when is loading from local storage.
renames ContactListController to ApplicationController.
carries url field to the ApplicationController.
fixes FileExists method in Storagecontroller
adds field PhotoPath in Class Contact.
adds the ability to upload photos of contacts.