Ported progress from SPA and began scaffolding Identity UI.

Laid some groundwork in backend.

Began customizing Identity UI.

Props/Areas/Identity/Pages/Account/Manage/_StatusMessage.cshtml

@@ -0,0 +1,10 @@
+@model string
+
+@if (!String.IsNullOrEmpty(Model))
+{
+    var statusMessageClass = Model.StartsWith("Error") ? "danger" : "success";
+    <div class="alert alert-@statusMessageClass alert-dismissible" role="alert">
+        <button type="button" class="close" data-dismiss="alert" aria-label="Close"><span aria-hidden="true">&times;</span></button>
+        @Model
+    </div>
+}