This is a follow-up to commit b5c2e72051.
* gnu/packages/python-web.scm (python-requests)[propagated-inputs]: Add
PYTHON-CERTIFI, PYTHON-CHARDET, PYTHON-IDNA, and PYTHON-URLLIB3.
(python-urllib3)[native-inputs]: Remove (due to dependency cycle).
* gnu/packages/python-web.scm (python-tornado): Update to 5.1.1.
[propagated-inputs]: Move python-backports-abc to python2-tornado only.
[home-page]: Use https.
* gnu/packages/python-web.scm (python-werkzeug): Update to 0.14.1.
[arguments]: Run tests after 'install phase. Use custom 'check phase.
[propagated-inputs]: Add python-requests.
[home-page]: Update to new home-page.
* gnu/packages/python-web.scm (python-flask-login): Update to 0.4.1.
[arguments]: Run the test suite.
[propagated-inputs]: Add python-flask.
[native-inputs]: Add test dependencies.