SEO: poor "featured snippets"

[Deleplace]

In this example, the Google search result is explicitly and specifically the URL of the Python implementation. However, the featured snippet shows come Cobol code, which is definitely not we need here.

Please consider excluding all "other languages code snippets" from the "featured snippets" opt-out program: see data-nosnippet.

[Deleplace]

In many cases, no "featured snippet" show up at all even when Programming-Idioms is the first result.

[Deleplace]

See also #146 (wrong search result contents)

[Deleplace]

Fix with data-nosnippet deployed. Wait and see.

[Deleplace]

Not fixed yet.

Adding data-nosnippet to the modal-impl-grid div. Wait and see.