Add help/swagview/index.html

This produces an error page: page shouldn't be indexed or linked to.

Author: delphidabbler

help/swagview/index.html

@@ -0,0 +1,20 @@
+---
+layout: help-error
+robots: noindex
+title: DelphiDabbler Application Help
+meta-title: "Invalid page"
+---
+
+<p>
+    Maybe you were expecting the following page?
+</p>
+
+<ul class="list-group">
+    <li class="list-group-item">
+        <a href="./0.0/">SWAGView v0.x help</a>
+    </li>
+</ul>
+
+<p>
+    If not then please choose another page from the menu above.
+</p>