Allow the chart count widget to have a time period. When present, apply the time period and display a legend detailing what the time period is.

Now if a user attempts to log in from a login page with a stale
CSRF token, they will be redirected to the dashboard or, if they
have logged out, to a fresh login page.

The Data Layer apps need to prceed the local ones because of
dependencies, the app can depend on the data layer and imports
them before they have been initialised

Use django_assets to manage our assets and ensure we can minify js/css, compile less files, and merge all js/css into a single file. For this to work in production, all assets must be statically defined in his/assets.py. To ensure the correct js/css is included, views can invoke hid.assets.require_assets which will raise an exception if the asset is missing. This also has the advantage of making clear which part of the code depends on a given asset. The admin command in django_asset library's latest release does not work with the latest Django - so we use a version pulled from git. See https://github.com/miracle2k/django-assets/issues/52

Implement a dashboard infrastructure to allow us to register widget types, create dashboards, create instances of widget types with specific configuration and associate those with a given dashboard, at a given position. The dashboard infrastructure is moved out of hid and into it's own application as it is stand alone (the widgets may depend on hid specific logic, but the infrastructure doesn't).

https://trello.com/c/dEa42JFS/21-bug-column-display-of-time-to-be-dd-mmm-yyyy

Was getting:

~/workspace/internewshid/django/website➔ ./manage.py --version
/home/marks/workspace/internewshid/django/website/data_layer/models.py:11: RemovedInDjango19Warning: Model class data_layer.models.Message doesn't declare an explicit app_label and either isn't in an application in INSTALLED_APPS or else was imported before its application was loaded. This will no longer be supported in Django 1.9.
  class Message(DataLayerModel):

/home/marks/workspace/internewshid/django/website/data_layer/models.py:11: RemovedInDjango19Warning: Model class data_layer.models.Message doesn't declare an explicit app_label and either isn't in an application in INSTALLED_APPS or else was imported before its application was loaded. This will no longer be supported in Django 1.9.
  class Message(DataLayerModel):

1.8.2

'transport' app imports 'data_layer' so changed their order in
LOCAL_APPS