Attempt at fixing tests in the restructure branch

The datewidget has a dict of options and dumps it in javascript.
Problem: the order of options is unpredictable because it doesn't use an
OrderedDict.

Note: it **must** be kept loosely coupled with other modules in this
repository. It was merged here just to remove the burden of having
several repositories to manage: volunteer time is precious.

Note: it **must** be kept loosely coupled with other modules in this
repository. It was merged here just to remove the burden of having
several repositories to manage: volunteer time is precious.

Fixes::

    remote: OSError: [Errno 13] Permission denied: '/var/lib/openshift/57ec41f27628e1f7b40000e6/.cache'

Fixes::

    IOError: [Errno 2] No such file or directory: '/var/lib/openshift/57ec41f27628e1f7b40000e6/python/virtenv/bin/pip'

- add tox for easier reproduction of travis builds
- add idempotence to install_client_deps.sh if CI=1
- mov modules into src/
- update setup.py to install everything as separate modules
- add docs and qa tox jobs
- update documentation

Todo:

- merge django-representatives
- merge django-representatives-votes

Responsediff 0.7.1 released with fix

Ensure proposals that have the same theme both by themselves and from the
dossier they belong to are counted once towards theme score.

Move openshift settings away, tidy up main settings and add the ability to
import local settings from a local_settings.py file.