1. Sync sphinx dependency with global requirements. It caps python 2 since
sphinx 2.0 no longer supports Python 2.7.
2. Update some URLs to latest
Change-Id: I35c087c9da9ea68fe586b6d21a94614d15954354
Inital commit with minor changes after Cookiecutter
Change-Id: I74f7dca5fa4abc0ae6cfc798f2a5e8fc72895bc1
Signed-off-by: Tomi Juvonen <tomi.juvonen@nokia.com>