Minor fix

flag permission for edit menu

Bugs fixed

• Back button now work in all edit menus

Added

• Usage message now is configurable
• Removed no permission message in homes menu, now only open the edit menu

BUGS FIXED

• NullPointerExpection en edit menu, produced wen item is disabled
• Hide message now it works correctly
• usePermission Option now works with custom items

New Features added:

1. Use permissions option: now you can set a player permission to use gui items
2. Lock option: now flags can lock to changue group option
3. New default flags added: use,build,damage-animals,chest-access,tnt,lighter

minor bugs fixed