Fix a bug where the cached data structure was not deleted.

Add template variables for showing the uploaded photos.
Add tests for the template variables.
Add a form field to delete the photo with all data.

lib/WebGUI/Help/Asset_Story.pm

@@ -38,6 +38,7 @@ our $HELP = {
                 { name      => 'imgAltForm', },
                 { name      => 'imgTitleForm', },
                 { name      => 'imgUrlForm', },
+                { name      => 'imgDeleteForm', },
               ],
             },
         ],
@@ -79,6 +80,16 @@ our $HELP = {
                 },
               ],
             },
+            { name      => 'photo_loop',
+              'variables' => [
+                { name      => 'imageUrl', },
+                { name      => 'imageCaption', },
+                { name      => 'imageByline', },
+                { name      => 'imageAlt', },
+                { name      => 'imageTitle', },
+                { name      => 'imageLink', },
+              ],
+            },
         ],
         related => []
     },