sync translation files with transifex: `tx pull --all --force`

refs #2200 https://dev.guardianproject.info/issues/2200
fix TypographyEllipsis (... should be …)
fix strings.xml syntax error: "Apostrophe not preceded by \"
fix xliff tags corrupted by Transifex (./fix-xliff-tags)

refs #1315 https://dev.guardianproject.info/issues/1315