Adding confirmEmail scaffolding

- Also updating the UrlHelpExtensions to not have a dependency on the AccountController

src/Web/Areas/Identity/Pages/Account/ConfirmEmail.cshtml

@@ -0,0 +1,12 @@
+@page
+@model ConfirmEmailModel
+@{
+    ViewData["Title"] = "Confirm email";
+}
+
+<h2>@ViewData["Title"]</h2>
+<div>
+    <p>
+        Thank you for confirming your email.
+    </p>
+</div>