Added a curation page for /chemical/

[egonw]

• implements On the curation page for chemicals, add panel for work with titles containing the chemical name but with no corresponding main subject tag #1909

Description

Curation page for chemicals.

chemical name in article titles

missing chemical properties

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

Please describe the tests that you ran to verify your changes. Provide instructions, so we can reproduce. Please also list any relevant details for your test configuration.

• test the curation page for L-proline: http://127.0.0.1:8100/chemical/Q20035886/curation

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, ...)

[Adafede]

Obvious support for this one! Thank you very much @egonw 💪🏼

[fnielsen]

I have now merge this into master. @egonw and I discussed whether clinical trials should have P921 when it is represented in another way, see, e.g., https://www.wikidata.org/w/index.php?title=Q62105803&oldid=1993994468

[fnielsen]

As stated on #2352 the link for work goes to chemical.