translate importe zone file button

interface/web/dns/lib/lang/en_dns_soa_list.lng

@@ -7,4 +7,5 @@ $wb["ns_txt"] = 'NS';
 $wb["mbox_txt"] = 'Email';
 $wb["add_new_record_wizard_txt"] = 'Add new DNS Zone with Wizard';
 $wb["add_new_record_txt"] = 'Add new DNS Zone manually';
+$wb["import_zone_file_txt"] = 'Import Zone File';
 ?>

interface/web/dns/templates/dns_soa_list.htm

@@ -24,7 +24,7 @@
             <div class="buttons">
                 <button class="button iconstxt icoAdd" type="button" onclick="loadContent('dns/dns_wizard.php');"><span>{tmpl_var name="add_new_record_wizard_txt"}</span></button>
                 <button class="button iconstxt icoAdd" type="button" onclick="loadContent('dns/dns_soa_edit.php');"><span>{tmpl_var name="add_new_record_txt"}</span></button>
-                <button class="button iconstxt icoAdd" type="button" onclick="loadContent('dns/dns_import.php');"><span>Import Zone File</span></button>
+                <button class="button iconstxt icoAdd" type="button" onclick="loadContent('dns/dns_import.php');"><span>{tmpl_var name="import_zone_file_txt"}</span></button>
             </div>
         </fieldset>
     </div>
@@ -80,4 +80,4 @@
         </fieldset>
     </div>
 
-</div>
\ No newline at end of file
+</div>