My question is in the title :)
Topic on Extension talk:ShowRealUsernames
Extension:Realnames may be what you are looking for, and it has just been updated to work with 1.31.1 LTS. (disclaimer: I am its author)
Extension:Realnames may be what you are looking for, and it has just been updated to work with 1.31.1 LTS. (disclaimer: I am its author)