merge translations

use existing translations until they're updated

merge branch.sql

fix the new geographic locales

use existing translations until they're updated

update translation catalogs

fix a sentence in `/about/teams`

fix a `CurrencyMismatch` in `resolve_team_donation`

fixes LIBERAPAYCOM-1BF

caused by liberapay#2056

merge translations

Merge pull request liberapay#2054 from liberapay/various