v20180809.3

Feature/correct logic (#2)

* Added  navigation to WPF application.

* Added essential services. This folder is not to be removed. Services should not be edited.

* Added Logging

* Updated .NET framework reference to match the PCL. Finished startup logic.

* Lowered WPF Project to 4.5.1.
Removed Unused reference in Weather.Core.

* Added an Edit ViewModel

* Removed unused projects.

* Added Unit test.

* Added logic to search for location by 'City, State' or 'Postal Code' or 'Latitude, Longitude. Added unit test to test logic.