Add multiple claimants to the flow (WIP)

- [x] Add multiple claimants to the flow
- [x] Hypenate URLs #296 
- [x] Non-JS solution to non-destructively add claimants
- [ ] i18n
- [ ] Styling
- [ ] Progressive reveal
- [ ] Destruction of arbitrary claimants
TIL about this cool trick. You can reference other i18n key paths to DRY shizz up.