Initial investigation says this is a no-lose upgrade.

Tablesorter's package.json needs to be outright deleted.

For https://github.com/ebiwd/EBI-Framework/issues/150

For republish to address https://github.com/ebiwd/EBI-Framework/issues/150

We don't want to updated to 6.6.x

This also copies the .js.map files.

Closes #152

Some dependencies (`libraries/tablesorter/css`) were missing.

Resolves:
- https://helpdesk.ebi.ac.uk/Ticket/Display.html?id=362430
- https://helpdesk.ebi.ac.uk/Ticket/Display.html?id=366092