Tweak the layout of the debug page info thingie

layouts/partials/development/page_info.html

@@ -1,7 +1,8 @@
 {{ if not hugo.IsProduction }}
 <div class="platter" id="debug-page-info">
     <details>
-        <summary>Debug Page Info</summary>
+        <summary>Debug Info</summary>
+        <h4>Page Details</h4>
         <table>
             <tbody>
                 <tr><td>.FirstSection</td><td>{{ .FirstSection }}</td></tr>
@@ -16,6 +17,16 @@
             </tbody>
             {{ end }}
         </table>
+        {{ if gt (len site.Params.flags) 0 -}}
+            <h4>Flags</h4>
+            <table>
+                <tbody>
+                    {{ range $flag, $value := site.Params.flags }}
+                    <tr><td>{{ $flag }}</td><td>{{ $value }}</td></tr>
+                    {{ end }}
+                </tbody>
+            </table>
+        {{- end }}
     </details>
 </div>
 {{ end }}