I figured out that one important string which should be placed in navigation menu don’t exist in cliend.en.yml:
This is where is this string should be placed: discourse/client.en.yml at master · discourse/discourse · GitHub
I know that Discourse translates on Transifex, but I didn’t found button to add missing locale string (may be I just have no permission to).
So here is my question: how should be resolvesd situations like this? Can I fork-fix-PR into Discourse repo or something else? It’s really annoying and was a problem about a year ago: Log in · Transifex (see comments to New (1).