Fix g2 redirect to use external redirect (and declare it as permanent).

Redirects weren't working for me in Firefox 3.5 when not signed into G3 (and all items are public).

modules/g2_import/views/admin_g2_import.html.php

@@ -103,7 +103,7 @@
         &lt;IfModule mod_rewrite.c&gt;<br/>
           RewriteEngine On<br/>
           RewriteBase <?= html::clean(g2_import::$g2_base_url) ?><br/>
-          RewriteRule ^(.*)$ <?= url::site("g2/map?path=\$1") ?>   [QSA,L]<br/>
+          RewriteRule ^(.*)$ <?= url::site("g2/map?path=\$1") ?>   [QSA,L,R=301]<br/>
         &lt;/IfModule&gt;<br/>
       </code>
     </div>