Thread:Support/About EtherpadLite:Timeslider.unnamedauthor/en and EtherpadLite:Timeslider.unnamedauthors/en/reply

Updated our i18n lib, so this should be possible now. See https://github.com/ether/etherpad-lite/pull/1841/files for an example of how it works and https://github.com/marcelklehr/html10n.js#pluralization for a thorough explanation.