No code appending for simplified/traditional chinese

lang/models.py

@@ -346,7 +346,9 @@ class Language(models.Model):
         ordering = ['name']
 
     def __unicode__(self):
-        if not '(' in self.name and ('_' in self.code or '-' in self.code):
+        if (not '(' in self.name
+                and ('_' in self.code or '-' in self.code)
+                and self.code not in ('zh_TW', 'zh_CN')):
             return '%s (%s)' % (_(self.name), self.code)
         return _(self.name)