Merge branch 'sphinx_docs' into 'master'

Sphinx docs

See merge request !140
5 jobs for master in 11 minutes and 19 seconds
Status Job ID Name Coverage
  Test
passed #178182
test_min

00:02:19

passed #178183
test_mpi

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passed #178184
test_mpi_fftw

00:03:53

passed #178185
test_mpi_fftw_hdf5

00:05:15

57.0%
 
  Release
passed #178186
release_image_master

00:06:03