Update Python dependencies (#3716)

* Remove MultipartPostHandler.py (unused)

* Remove sqliteshelf.py (unused)

* Update tornado to 4.5.1 (was 4.4.2)

Dependencies:
- certifi updated to 2017.4.17
- singledispatch is up-to-date @ 3.4.0.3
- backports_abc updated to 0.5
- backports.ssl-match-hostname updated to 3.5.0.1
(used by tornado/netutil.py, for python versions prior to 2.7.9)
- six is up-to-date @ 1.10.0

* Rename shutDown, Fix static file routes

(the routes from webserve.py were taking over first)

* Mako updated to 1.0.6

Dependencies:
- MarkupSafe updated to 1.0

* Update README.md

Add information

* Update BeautifulSoup4 to 4.5.3 (was 4.4.1)

* Update html5lib to 0.999999999 (was 0.999)

Dependencies:
- [NEW] webencodings [required: Any, installed: 0.5.1]
- six [required: Any, installed: 1.10.0]

* Revert "Change IMDB parser to html.parse."

This reverts commit 12896fc3f9de86a27b17cf38c7dc41c2f7ab9267.

Maybe updating html5lib resolved that issue.

* Update README.md

- bs4
- html5lib