Bukkit

Steps to reproduce:
When handling large modpacks, there's a lot of duplicated entries from items banned or restricted, thus lot of errors involved.

Expected Output:
Simplify configuration
1- in most cases, an id blocked at world level is also banned from use and ownership
2- frequently, an id blocked from ownership is also blocker from usage

I would propose this kind of settings for that:
...
Bans:
  Usage:
    - 123-0
  Ownership:
    - 456-4
  Spawn:
   - 657-45
  Usage,Ownership,Spawn:
   - 987
  World,Usage,Ownership,Spawn:
  - 789-4
  World:
  - 7
...

Actual Output:

Plugin Version:

CraftBukkit Build Number:

Pastebin Link to Error Logs: