Upload of large files with read timeout when using chunked upload

[mitar]

I think the issue is that after uploading all chunks, the client has to wait for combining to finish. And that can take longer than default 30 seconds timeout. I passed reqs={'timeout': 3*60} to mwclient.Site which seems to address the issue. But I think it would be nicer if the client would just be retrying and checking the status of combining. I think this is what bigChunkedUpload.js script does.