Make richie a distributable / packaged Django application

[jmaupetit]

Purpose

At the time of writing, Richie is a Django project embedding FUN's opinionated vision of what such portal should be. Let's make Richie a distributable Django app that can be customized and integrated in an existing Django (CMS) project.

Proposal

We need to make the project tree evolve to a more standard distributed app tree. I think the Django-Oscar project is a good example of what our repository should look like:

• make richie a meta application that bundles sub-apps (core, courses, persons, search, etc.)
• move the application to a src/ directory
• move tests in a test/ directory
• add a sandbox/ directory (the minimal Django project that will be used for development/tests)
• package the application (setup.{py,cfg})*
• automate packaging in the CI*

* Those two last points the latest point can be handled in a separated PR.

Edit: we need to package the app to make the whole refactoring working

[mbenadda]

@jmaupetit how far along in this are we on master right now? Is everything done?

[jmaupetit]

Yup, we can close this.