login vindue i windows klienten
Merge remote-tracking branch 'origin/develop' into develop

Conflicts:

	Code/UsedCarApplication/WindowsClient/ViewModels/ApplicationViewModel.cs
	Code/UsedCarApplication/WindowsClient/ViewModels/RelayCommand.cs
	Code/UsedCarApplication/WindowsClient/Views/ApplicationView.xaml
	Code/UsedCarApplication/WindowsClient/WindowsClient.csproj