Move retried_request from the toolbox

Closes #38 (closed)

I added the retry mechanism directly on the request function so that the migration is transparent (we don't have to change all the client.request to client.retried_request), as we use this system everywhere (callico, base worker, cli, scrapers etc.).

added P2 label

assigned to @mblanco

changed milestone to %Arkindex 1.6.1

changed the description

requested review from @erouchet

mentioned in merge request tools/python-toolbox!16 (merged)

requested review from @babadie and removed review request for @erouchet

resolved all threads

merged

mentioned in merge request !237 (merged)