Added the missing file from my last checkin.

--HG--
extra : convert_revision : svn%3A5ff7c347-ad56-4c35-b696-ccb81de16e03/trunk%4043119

src/Orchard.Web/Packages/Orchard.Blogs/Extensions/UriExtensions.cs

@@ -0,0 +1,9 @@
+using System;
+
+namespace Orchard.Blogs.Extensions {
+    public static class UriExtensions {
+        public static string ToRootString(this Uri uri) {
+            return string.Format("{0}://{1}{2}", uri.Scheme, uri.Host, uri.Port != 80 ? ":" + uri.Port : "");
+        }
+    }
+}