Item9422: Unable to easily remove foswikiPref dependency

Because the jquery cookie plugin doesn't do sub-cookies, but
http://code.google.com/p/ezcookie/ does

git-svn-id: http://svn.foswiki.org/trunk@8503 0b4bb1d4-4e5a-0410-9cc4-b2b747904278

TwistyPlugin/lib/Foswiki/Plugins/TwistyPlugin/TWISTY.pm

@@ -38,6 +38,9 @@ sub new {
         ),
         $class
     );
+    # The jquery plugin code is using 'sub-cookies' within the FOSWIKIPREF
+    # cookie.
+    Foswiki::Func::expandTemplate('JavascriptFiles/foswikiPref');
 
     return $this;
 }