Merge branch 'submitting-drivers-removal' into docs-next

Lukas Bulwahn says:

  Here is an attempt to delete submitting-drivers with some improvements
  and clean-up in other documentation places to convince ourselves that
  nothing valuable is lost when deleting this checklist.

  Patch 1, 2 and 3 is just basic clean-up before adding a new reference
  (see Patch 4). Patch 4 adds the one reference from submitting-drivers,
  not already mentioned elsewhere in the repository. Patch 5 updates a
  confusing statement in devices.rst from earlier .txt/.tex distinction
  times to the new state now with Sphinx & .rst.

  Patch 6 finally deletes the outdated document, with a cross-check what is
  covered elsewhere and few open questions (see below).

  Patch 7 and 8 have been reworked with the native-speaking doc
  maintainers; they cause no new warnings and are ready to pick,

  Patch 9 to 11 are weak attempts to adjust the translation, but they need
  to be taken further by others due to my lack of knowledge on the other
  languages.  They would currently also cause new warnings in the doc-build
  right now. They should not be picked if there is no one to continue to
  adjust the text and fix the warnings on broken references.

Additionally, this branch includes a translation fix from Alex Shi.