Axios errors are not handled anymore

[AlexisSouquiere]

In #1601, axios validateStatus has been set to true for all the requests (see here) which means that all the HTTP codes shouldn't throw an error (even 4xx, 5xx).

It means that the common errors management doesn't work anymore because errors won't go through the axios.catch() and then to handleError in api.js (displaying toast warns or errors). Response will go thought .then() like if the request succeded (like this).

Moreover I saw an issue that prevented 401 errors to redirect to the login page (see here). err.status should be err.response.status

I will provide a fix quickly