Add template field to StoryTopic. The same template will be shared between both modes.

Add top story variables, and tests.

lib/WebGUI/i18n/English/Asset_StoryTopic.pm

@@ -81,6 +81,24 @@ our $I18N = {
         lastUpdated => 0,
     },
 
+    'topStoryUrl' => {
+        message => q|The URL to view the top story.|,
+        context => q|Template variable.|,
+        lastUpdated => 0,
+    },
+
+    'topStoryTitle' => {
+        message => q|The title of the top story.|,
+        context => q|Template variable.|,
+        lastUpdated => 0,
+    },
+
+    'topStoryCreationDate' => {
+        message => q|The epoch date when the top story was created, or submitted, to its Story Archive.|,
+        context => q|Template variable.|,
+        lastUpdated => 0,
+    },
+
     'view template' => {
         message => q|View Story Topic Template|,
         context => q|Template variable.|,