Add vehicle filtering for fuellog and vehicle service

Web/ViewModels/VehicleService/VehicleServiceQueryViewModel.cs

@@ -2,5 +2,18 @@ namespace MileageTraker.Web.ViewModels.VehicleService
 {
 	public class VehicleServiceQueryViewModel : DateQueryViewModel
 	{
+		public string VehicleId { get; set; }
+
+		public override string ToString()
+		{
+			if (string.IsNullOrEmpty(VehicleId))
+				return base.ToString();
+			return base.ToString() + "_" + VehicleId.Replace(' ', '-');
+		}
+
+		public override bool HasParameters()
+		{
+			return base.HasParameters() || !string.IsNullOrEmpty(VehicleId);
+		}
 	}
 }