The item group name appearing as "itemGroup.dragon quest" instead of "dragon quest"
My little project is on github, and I made an issue with some screen here
I think I found where thr problem comes from. here you are putting the key "dragon quest". I think it's used everywhere to get the name.
If you remove the space (and so, have super("dragonquest");), you will see the translation here : "Tutorial Item Group".
And so, you should change the lang file to change the name showed in the inventory name.