Fixes #2629

Description

This patch adds the complementary askQuery2 method that uses the endpoint configuration data. Similar to the #2631 patch.

The askQuery() method is used in the macro defined in base.html and that macro is used in three aspects, together four times:

$ grep -ri "ask_query_callback" scholia
scholia/app/templates/work.html:{% call ask_query_callback('cito') %}
scholia/app/templates/work.html:{% call ask_query_callback('gallery') %}
scholia/app/templates/venue.html:{% call ask_query_callback('cito') %}
scholia/app/templates/author.html:{% call ask_query_callback('retractions') %}
scholia/app/templates/base.html:{% macro ask_query_callback(panel) -%}

Caveats

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)

If you make changes to the Python code

• My code passes the tox check, I can receive warnings about tests, documentation or both

Testing

Earlier the three aspects are listed that use the askQuery() functionality: work, venue, and author.

• Test the three aspects.
  • For author test an author that has retractions
  • For venue and work, test the CiTO annotation
  • For work, test the "gallery" functonality

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, ...)