Typos.
Removed length and binary response in the fake remote service.

The real remote service in async library changed (binary response was
unused, thus also the message length became unnecessary). The fake
remote service (implemented in cmstestsuite) needs to account for
those changes. For the tests to continue working.
Added some files to the installation to fix cmstestsuite.
Factor the Tornado application through a WSGI interface.

This commits actually makes *WS slower and in theory less powerful.
It is only a "just-because-we-can-commit", in order to check whether
our current code factors well through a WSGI interface.

Of course this doesn't involve RWS: it is known that RWS doesn't
factor well through a WSGI interface.