Add vehicle active/inactive state

Web/Views/Shared/DisplayTemplates/DateTime.cshtml

@@ -1,10 +1,21 @@
 @using System.Globalization
-@model DateTime
+@model DateTime?
 @{
 	Layout = "~/Views/Shared/DisplayTemplates/_FieldLayout.cshtml";
     var val = 
-        ViewData.ModelMetadata.DisplayFormatString != null
-        ?string.Format(ViewData.ModelMetadata.DisplayFormatString, Model) 
-        : Model.ToString(CultureInfo.InvariantCulture);
+		Model.HasValue 
+		?
+			ViewData.ModelMetadata.DisplayFormatString != null
+			? string.Format(ViewData.ModelMetadata.DisplayFormatString, Model) 
+			: Model.Value.ToString(CultureInfo.InvariantCulture)
+		: string.Empty;
 }
-@Html.Encode(val)
+@if (Model == null) 
+{
+    @Html.Encode(@ViewData.ModelMetadata.NullDisplayText)
+}
+else
+{
+    @Html.Encode(val)
+}
+

Web/Views/Shared/DisplayTemplates/Object.cshtml

@@ -2,7 +2,11 @@
 @{
     Layout = null;
 }
-@foreach (var prop in ViewData.ModelMetadata.Properties.Where(pm => pm.ShowForDisplay && !pm.HideSurroundingHtml && !pm.ModelType.IsCollection()))
+@foreach (var prop in ViewData.ModelMetadata.Properties.Where(
+	pm => pm.ShowForDisplay 
+		&& !pm.HideSurroundingHtml 
+		&& !pm.ModelType.IsCollection()
+	))
 {
 	@Html.Display(prop.PropertyName)
 }