Delete ad-hoc whitespace escaping in movie.py

As far as I can tell the web.get method handles this correctly via
urllib2.quote anyway. The pre-emptive replacement of " " with "+" in
movie.py results in a bogus doubly-escaped URI generated for a query
with a space, e.g.

.movie Groundhog Day

The resulting URI is http://www.imdbapi.com/?t=groundhog%2Bday, which is
bogus and produces a 'Movie not found!' reply.

Deleting that line and letting web.get handle it internally generates
the correct response.
[wikipedia] Don't .encode() the query

It's pointless, web.py already handles that
Add dev-requirements.txt file, documenting requirements to run tests
Added Travis CI and Coveralls.io integration
Change submodule URL to use HTTPS rather than SSH

So that services like Travis can fetch the submodule
Fix unicode issues with tests
disable translation tests, since they are broken