* restored some old code that had gone missing
* fixed the survival inventory tab API not working
* fixed some grammar
Reviewed-on: MineClone2/MineClone2#4147
Reviewed-by: the-real-herowl <the-real-herowl@noreply.git.minetest.land>
Co-authored-by: James David Clarke <james@jamesdavidclarke.com>
Co-committed-by: James David Clarke <james@jamesdavidclarke.com>