Table columns should be sortable

[d0c-s4vage]

Describe the Feature Request

Clicking on a table column header should sort the rows by that column.

Each column should have three states:

• default
• ascending sort
• descending sort

multiple columns clicked should result in sorting being performed based on multiple keys

Example Markdown

Markdown should be the same as normal

Screenshot/Wireframe

An indicator should appear on the heading separator:

column   column
─────▴   ─────▾
5330     5330

Additional notes Add any other notes about the feature here.

[d0c-s4vage]

Done in 3.0-dev