Staff type items inconsistency with curio slots

[Trejden]

Describe the bug
Angery Skull staff, Hellfire staff, Punkin staff, are missing curio slot assignment completely, which makes them unequipable into curio slots, staff of calling is set to be only equipable in back slot, while every other staff - generic or faction - are set to be equipable in back and spell slots.

To Reproduce
Steps to reproduce the behavior:

1. Get item Angery Skull staff, Hellfire staff, Punkin staff, staff of calling
2. Try to equip it in curio spell or curio back slot (only spell slot for staff of calling)
3. See that it does not equip

Expected behavior
I'd expect staff curio compability to follow some consistent rules on which staff is equipable where. Unless there is specific exception stated within codex on the relevant staff page, I think all staves should be equipable in both back and spell slots.

Screenshots

Version Information (please complete the following information):

• Mod Version: 3.1.0.1
• Forge Version47.3.11