LPS-34903

Hi Julio,

here's re-done code for LPS-34903 and requested by Nate in https://github.com/natecavanaugh/liferay-portal/pull/1159

The width restriction is not present any more after portal CSS changes (Alloy 2.0 in master), but the script's textarea became unreasonably small with the next CSS. So I made it 10em high and 45em wide by default, to show the default JavaScript text by default.

Thanks,
Josef