J034153: V6; HTML Widgets; widget.UI.Grid; New "noStyle" startup option to prevent default styling from being applied

Adding the following when creating a widget grid control will prevent the majority of styling being applied, allowing Portals and External Widgets to provide their own styling without the risk of clashing with built-in styles, e.g.:

var grid = widget.UI.Grid("gridText", {
  noStyle: true
});

NOTE: Since most styling is not applied, this means functionality such as showing and hiding the filter row may not work as expected.