Added support for 'replies to' in the data table

[egonw]

Fixes #249
Fixes #491

Description

There is a replies to property and the linked issue requests adding that info. I added it to the data table.

Caveats

None that I can think of (right now).

Check any of the following which apply:

• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update
  • I have made corresponding changes to the documentation
• This change requires new dependencies (please list)

Testing

• http://127.0.0.1:8100/work/Q28951838
• http://127.0.0.1:8100/work/Q56377493

Checklist

• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• I have not used code from external sources without attribution
• I have considered accessibility in my implementation
• There are no remaining debug statements (print, console.log, ...)

Screenshots