docs: More specs for ui.table functionality (#198)

Here are how my initial attempts line up with the requests:
Display names (#105)
event listener (Fixes #180)

requests from #77:
Show/hide quick filter by default
density
Ability to hide column headers
Ability for the server to specify rows to select
Allow multi/single selection
Allow row selection to be visible with checkboxes (vs just styled as
highlighted, etc)