Basic bibliography section

[mromanello]

Bibliography will be one item in the main menu.

In this basic version, I'd like to have displayed bibliographic metadata for the commentaries in our corpus, which should be fetched from this Zotero library. Short labels in the multi-comm. reading environment (e.g. Finglass 2011) should link back to the corresponding record in this section.

[mromanello]

For each bibliogr. item, it'd be nice to display as well a link to Wikidata (wikidata ID, if available, is stored in Zotero's Extra field)

[pletcher]

Short labels in the multi-comm. reading environment (e.g. Finglass 2011) should link back to the corresponding record in this section.

This now works!