Metadata model, holdings level, new editor start

• Data model:
  • Adds holdings level, to gather items data from the same circulation category and location.
    • As the librarian adds an item to a document, the holdings is automatically created, based on item type and location.
    • Then, new items are automatically attached to a holdings.
    • As the last item of a holdings is deleted, the holdings is automatically deleted.
    • As an item is updated, changing its type or location, the holdings is updated accordingly, meaning that it can be deleted and another one created.
    • Avoids holdings automatic creation for fixture, otherwise it slows to much the fixture population.
  • Implements new field in the data model: copyright date.
  • Implements new field in the data model: publication statement.
  • Improves the dojson utility to allow multiple visits of the same source field or zones for a single transformation.
• User interface:
  • Improves availability display for document, holdings and items, in document brief and detailed views
  • On document detailed views, holdings are displayed with holdings and item data.
  • In an organisation's view, documents are filtered using holdings data.
• Record editor, specifically for cataloging usage:
  • Compacts the layout and improves the user interface look.
  • Allows to add and remove first level fields that are not required.
  • When updating an existing record or when importing a record, populated fields are displayed with data, but empty fields are hidden.
  • When using the async validator, ie to check the uniqueness of item barcodes, the submit button is disabled.
• Circulation:
  • Circulation policies get item data from the holdings.
  • Invenio logger message for item API added to circulation user interface, and improvement of error message provided to the librarian.
• Harvested documents:
  • Improves the ES indexing of OAI-PMH harvested records.
• Fixtures:
  • Renames fixture files from 10k or 1k to big and small, and reduces the size of fixture data to speed up the development setup.
  • Reduces missing items to 2%.
  • Extends the set of supported document languages, in order to allow the new data model to be tested.
  • Updates data with updated MEF data.
• Tests:
  • Adds a script to test the license headers for all concerned files.
  • Cleans tests fixture data.
• Instance:
  • bootstrap script:
    • Uses always pipenv npm instead of system npm.
    • Removes unnecessary virtualenv.
    • Improves output message colors.
  • Adds a validate command to the CLI to allow manual validation of a record against a JSON schema.
  • Standardizes timezone globally, using utc timezone in all cases.
• Documentation:
  • Moves the existing issue template to default issue template.
  • Adds a pull-request template with a checklist for code reviewers.
• Fixed issues:
  • #437: restores the display of field "note" in the document detailed view.
  • #390: fixes the edit button in the document detailed view and in the professional document brief view, complying with the view filter for organisations.
  • #389: selects the affiliation organisation of the librarian in the edition form.
  • #223: improves the user interface of library calendar exceptions.
  • #366: improves the text displayed in the tabs of the circulation user interface.
  • #377: applies organisation filter on circulation user interface to avoid processing items and patrons from other organisations.
  • #447: fixes missing message on item delete button in document detailed views.
  • #225: fixes user menu sometimes not displaying user initials.
  • #495: fixes display of default thumbnail icon on document and item detailed views.
  • #484: fixes unnecessary loan creation.
  • #381: improves front page display in small screens.