Make python webserver use unbuffered IO.

[telnoratti]

When using the oauth functionality of gdl, I discovered a bug that made "$TMPFILE.code" always be an empty file. It seems that python was buffering output to the file and so the log would never be written to it. I added the -u flag to python which forced IO to be unbuffered and resolved the issue for me. The change passed the tests, but it wasn't clear the oauth component was tested.

As a side note some systems have python 2 and python 3 installed, but python is python 2. If python 3 is on a system, my understanding is that python3 should always be that.

[Akianonymus]

I don't know why it has empty file, weird as it was working for me. Given that the server is unbuffered, even then there should be no problem as the python server closes just after one request.

But anyway, this will be merged.

Push another commit and change python to python3

[Akianonymus]

I pushed the changes my self and authored you.