data-if='test' to conditionally display elements. 'Test' refers to any valid javscript
expression. There are som handy shortcuts available for you when setting up tests. These are currentRow (as a
shortcut for the current row for the data-object in scope), previousRow and i (for index/record number).
If you sort your table on a specific field and compare previous and current values in your conditional you can use it to create some very simple grouping.
If you would like to conditionallly add a class to an element, you may use the