Jest setTimeout in tests

[AlexandrePhilibertCPNV]

@NicolasGlassey

After our discussion about jest.setTimeout(10000);, here is the stackoverflow thread that lead us to implement jest this way :

https://stackoverflow.com/questions/49603939/message-async-callback-was-not-invoked-within-the-5000-ms-timeout-specified-by

[AlexandrePhilibertCPNV]

I moved the test timeout config to jest.config.js in order to have the same timeout time accross all test files

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