[ci skip] Fix wiki commit, 'ci skip' support

Fix git-commit var syntax

Combine jobs within workflows

Update doc, Dockerfile to test GH Actions

I originally tested in my fork where everything happened to be a push to a branch in the same repo.

Switch to GitHub Actions for CI/CD

Removed optional texlive-fonts-extra

Update scipy-notebook packages

- Remove inconsistency of callink make lint-all from the pre-commit hookj
- Remove comment in pre-commit conf
- Add specific targets in makefile to install and run pre-commit
- Change yamlint default conf to avoid line too long (for example on travis file)

Update ubuntu image

Reduces the image size by >1 GB

Upgrading Ubuntu, miniconda and jupyterlab

suppress "id: jovyan: no such user" message during start

## pre-commit
pre-commit added to check

- `bash` files with bashate see #1109
- `yaml` files with yamlint see #1108
- `docker` files with hadolint see #1100

# hadolint

version of the linter added as a variable in the `Makefile`