fnReloadAjax: ability to Ajax-refresh a paginated data table.
Does of course not need the test code :S
Fix incorrect row count in left joins with getids=False.
DataLists: hide pagination if all records in first page, FilterWidget:
client-side changeable operators need to be declared, otherwise enforce
the pre-defined operator(s) of the widget-class.
Allow a theme to customise _create/_display/_update/_search