* Create a repository app for documents, first step
* Step two (broken)
* Complete the implementation of document repository and add invoices
* Add support for invoices
* Update submodules
* Implement an action do download data in csv
* Refactor CSV download
* Move price to main models and add csv to bookshelf
* Update template and API
* Small refactoring
* Implement a customer manager for flatpages
* Implement public manager for private objects
* Add support for unpublished objects in roster and consist
* Add support for unpublished objects in bookshelf
* Update filtering on REST views
* Use uuid in urls.py
* Increment version
* Add a boolean to define item as part of a set
* Add contextual help in admin
* Introduce support to sets and to item code lookup
Also review the url path for pagination