MessyAnsweredited #1I was looking through the translated sentences at lichess.org/translation/contribute and noticed the 28th translation is redunded and no longer used. http://prntscr.com/dx9om6
pita96 #2I think it's a good idea to keep some old translations, for retrocompatibility purposes. You know, just in case
DoTheMath #3What do you mean? It is used. For example, when joining a game by link (Play with a friend).