Remove and/or replace DataTables

[RogerTangos]

DataTables is a bit outdated, and doesn't support things new to datahub, like public repos, or viewing collaborators' tables. It'd be good to remove it and/or replace with HandsOnTable, or an alternative system for visualizing database results.

At present DataTables is built with Gulp (similarly to how DataQ is built), and viewable only when a table owner is viewing their table.