lua.wetgenes.gamecake.widgets.checkbox.update
this function will also call lua.wetgenes.gamecake.widgets.meta.update
If we have a data assigned to this checkbox then make sure that the displayed text is up to date. We should really hook into the data so any change there is copied here instead?
We use data_mask to check a single bit and then set the text to either text_false or text_true depending on the result.