Assign a topic to every selected item

[benel]

Description

What is the valuable outcome that cannot be achieved with current features?

For which stakeholder (people, role, project, domain) is it important?

As reported by @gumn, this could be useful for the Cité du vitrail especially for items with the same name (requires #158).

Which user action should be enabled (or restricted)? For who?

Additional details (solutions you think about, or workarounds you tried)

Deliverables status

Phase 1

• [ ] Scenarios (Gherkin)
• [ ] Mockups
• [ ] Implementation strategy

Phase 2

• [ ] Acceptance tests (Capybara)
• [ ] Implementation

Phase 3

• [ ] Screencast