forward porting asset export i18n and hoverhelp

lib/WebGUI/AssetExportHtml.pm

@@ -823,10 +823,12 @@ sub www_export {
         -name           => "index",
         -value          => "index.html"
     );
+
     $f->text(
         -label          => $i18n->get("Export site root URL"),
         -name           => 'exportUrl',
-        -value          => '',
+        -value          => $session->asset->getUrl,
+        -hoverHelp      => $i18n->get("Export site root URL description"),
     );
 
     # TODO: maybe add copy options to these boxes alongside symlink

lib/WebGUI/i18n/English/Asset.pm

@@ -768,7 +768,17 @@ case of the check box list, then enter one per line.  The total amount of data i
 	'directory index' => {
 		 lastUpdated => 1118896675,
 		 message => q|Directory Index|,
-	       },
+    },
+
+    'Export site root URL' => {
+        lastUpdated => 1227213703,
+        message => q|Export site root URL|,
+    },
+
+    'Export site root URL description' => {
+        lastUpdated => 1227213703,
+        message => q|A URL to pass on to Macro Widgets.|,
+    },
 
         'Depth description' => {
                 message => q|<p>Sets the depth of the page tree to export. Use a depth of 0 to export only the current page. </p>|,