Revert "Send token as header instead of query parameter for downloads."
Revert "Send token as header instead of query parameter for downloads."

This seems to trigger an issue in Github's internal redirection to AWS.
We can probably re-ship this once Github has fixed this internally, but
for now, use the old, deprecated but working, solution.

This reverts commit a8793349c9ba3dd8d8f5439b9f93d5c5c71b6b32.

Closes #976

slapperwan/gh4a,slapperwan/gh4a