UI Navigation.
Merge branch 'master' of https://github.com/snke07/Cruella-de-Vill-Image-Gallery

Conflicts:
	Cruella-de-Vill-Image-Gallery/Cruella-de-Vill-Image-Gallery.sln
	Cruella-de-Vill-Image-Gallery/Cruella-de-Vill-Image-Gallery/Cruella-de-Vill-Image-Gallery.csproj
	Cruella-de-Vill-Image-Gallery/Cruella-de-Vill-Image-Gallery/Repositories/PicturesRepository.cs