Adds new columns to the table to store the relevant organisation, but also
allows for the metric/value to be stored so that it can eventually contain
different metrics than the default

Packages up the data from Analytics.

- Makes sure we get the right account by requiring a new googleanalytics.account
config option which will be used to look up the correct account details.

- Changed the model to use the sqlalchemy orm and made sure it does the updates correctly.

- Still need to collect further info (such as the group details)

flake8

Commented the code in ga_auth

Minor documentation update

Minor RST error

Implement oauth2 for accessing google analytics

- Provided a command (getauthtoken) to go through the auth flow and have
the user's oauth credentials written to local disk.
- Make sure loadanalytics command uses the token file to authenticate on
the request
- Added documentation on how to get the credentials (from google) to allow
for the oauth2 flow.
- Added google-api-client to the requirements

Initial iteration

Initial commit