Python packaging support

Can be installed from a local checkout with `pip install -e .` or
directly from git: `pip install -e
git+git@github.com:arachnys/cabot.git#egg=cabot`
More tweaks for Python packaging
Puts manage.py on $PATH and reads .env by default

Once the virtualenv is activated, management commands can be run without
the use of foreman/honcho with `manage.py <command>`.
Fixes module name
Merge branch 'python-package' into no-foreman
Fixes more test paths
Upgrades to Django 1.6
Fixes more test paths
Removes cached file that snuck in
Adds ALLOWED_HOSTS
Merge branch 'python-package' into django-1.6
Adds certifi for an updated CA bundle for requests
Merge branch 'python-package' into django-1.6
Adding a test now redirects back to service page
Fixed adding a check without linking it to a service displayying an error
Replaced tabs with spaces
Fixed a stupid indentation mistake
Started adding instance support and ICMP ping status checks
things
Added ICMP Check icon on StausCheck list, added Instance lists on Service detail views