Tables

The rainbow pro table implementation requires the developer to use semanticly correct table HTML, meaning that we take advantage of the thead and tbody elements.

The only non-standard details are how to implement sortable headers.
You can easily add the support (for the rendering) by following these rules:

1. All sortable headers must have the _sortable class.
2. All classes with _sortable must contain a span with ._sort-indicator
3. The ._sort-indicator must be an vertical arrow symbol
4. The currently sorted column must get the ._sorted-by class added