Add interactions tsv and table

[danidi]

On the old page, the DataNodes table included a column with comments, which contains for example synonyms, or other related information. This column does not exist on the new page, but would be nice to have.
Also the Annotated Interactions table from the old page is no longer available on the new page.

[AlexanderPico]

Adding comments was easy. Done!

An interactions table is a bit more work. Will require a new TSV generated metadata-action. So, I'll retitle this issue to focus on that remaining task.

[khanspers]

Related to this: #98. Adding it here so the information doesn't get lost when this is implemented.

[DeniseSl22]

@egonw : issue already posted by @danidi . The Table should be visible, if there is:

1. An identifier on the interaction; or
2. A comment on the interaction; or
3. A reference for the interaction.