[1.2] added missing button_to_function to JavascriptBaseHelper.php. fixes #4629
[1.2] added missing button_to_function to JavascriptBaseHelper.php. fixes #4629

git-svn-id: 050357b0b8a113fbed8536228807c575cbccf8f1@12131 ee427ae8-e902-0410-961c-c3ed070cd9f9

WIZARDISHUNGRY/symfony,WIZARDISHUNGRY/symfony,WIZARDISHUNGRY/symfony