gnu: python, python-web: Update ‘permanently moved’ home pages.
In practice, this switches all of them to HTTPS.
* gnu/packages/python.scm (python-six, python-spectra, python-scipy)
(python-beautifulsoup4, python-termcolor, python-rsa, python-anyjson)
(python-whoosh, python2-pathlib2, python-pbkdf2, python-ansi2html)
(python-rfc3987, python-validate-email, python-swagger-spec-validator)
[home-page]: Update.
* gnu/packages/python-web.scm (python-sockjs-tornado, python-webob)
(python-zope-event, python-zope-testing, python-zope-testrunner)
(python-zope-i18nmessageid, python-zope-schema, python-zope-configuration)
(python-zope-proxy, python-zope-location, python-zope-security)
(python-oauth2client, python-flask-script, python-flask-migrate)
(python-flask-httpauth)[home-page]: Update.
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