fixes bug 1111722 - urllib3 is available as tarball AND wheel
Merge pull request #2517 from peterbe/bug-1111722-urllib3-is-available-as-tarball-and-wheel

fixes bug 1111722 - urllib3 is available as tarball AND wheel
Fixes bug 1108472 - Ported SuperSearch service to new es module, using elasticsearch_dsl library.
Ported bug 1110003, fixed removal of namespace in fields names.
Tests are skiped if ES < 1.0, added a test for the facets size.