Minor modifications in CI and notebooks

• Update the README.md to reflect 2022 situation.
• /close #36 (closed) Update copyright year.
• #35 (closed) Rename the Dockerfiles, and make the gitlab-ci.yml file more DRY with the use of (Yaml) template.
• Docker: put myself as maintainer as Vicente no longer works for Inria.
• /close #25 (closed) Rename the Conda environment.

@steff You may review as well; I'm waiting for an approval to merge it

requested review from @vrouvrea

assigned to @sgilles

@sgilles As the copyright in 7-Appendix/StringView.ipynb is not exactly the same (© _Inria 2021_) as the other (© _CNRS 2016_ - _Inria 2018-2021_), it has been forgotten by this MR

approved this merge request

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• e05e550b - Fix copyright year for appendix notebook.

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approved this merge request

merged

mentioned in commit 8f9a83ae

mentioned in issue #48 (closed)