REFACTOR: remove useless console logs

[maxime-huyghe]

Content

This removes useless console.logs, replacing them with console.warns or console.errors when necessary.

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Checklist

Please check that your pull request is correct:

• Each commit:
  • [x] does not generate new errors or warnings at compile or test time,
  • [x] must be attributed to its real authors (with correct GitHub IDs and correct syntax for multiple authors).
• The title of a commit should:
  • [x] begin with a contribution type
    • FEATURE for a behaviour allowing a user to do something new,
    • FIX for a behaviour which has been changed in order to meet user’s expectations,
    • SCENARIO for examples showing a given behaviour,
    • TEST when it concerns an acceptance test of a given behaviour,
    • PROCESS for a change in the way the software is built, tested, deployed,
    • DOC when it concerns only internal documentation (however it is better to combine it with the contribution that required this documentation change),
  • [x] be followed by a colon (:) with one space after and no space before,
  • [x] be followed by a title (written in English) as short, as user-centered and as explicit as possible
    • If it is a feature, the title must be the user action (beginning with a verb, and please not manage),
    • If it is a fix, the title must describe the intended behavior (with should).
• Each committed line is:
  • [x] useful (it would not work if removed)
    • if it is a comment line, its information could not be conveyed by better variables and function naming, better code structuring, or better commit message,
  • [x] related to this very contribution (feature, fix...),
  • [x] in English (with the exception of Gherkin scenarios in French and resulting steps),
  • [x] without any typo in variable, class or function names,
  • [x] correctly indented (spaces rather than tabs, same number of characters as in the rest of the file).

[benel]

Integrated as d15eb79e5e9d88df88ffd80e49ab17caad78245e. Thanks for your contribution.