Attribute names or values could contain special characters (`+`, `&`, `?`...)

[benel]

Description

TODO

What is the valuable outcome that cannot be achieved because of this bug?

TODO

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

@Hypertopic/kerameikos

Reproduction scenario

A tomb could be localized by a "plus code" (however it doesn't seem precise enough). Ex :

spatial: 8G95XPH9+8F

TODO

Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error (if applicable, add screenshots to help explain your problem).

Expected behavior

A clear and concise description of what you expected to happen.

TODO

Environment

• OS: [e.g. Windows 10, macOS 10.15, iOS]
• Browser: [e.g. chrome 88, safari 14]

TODO

Workaround

Solution you found to avoid the problem.

Use {latitude}, {longitude} instead. Ex :

spatial: 37.97829196088586, 23.71873099757841

Deliverables status

Phase 1

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

Phase 2

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