Permission expansion

Various placeholders to check the permissions of a player

Placeholders:

%permission_count_permission nodes%    - returns how many of these permissions the player has
%permission_has_permission.node%       - whether the player has this permission
%permission_has-all_permission nodes%  - whether the player has all these permissions
%permission_has-any_permission nodes%  - whether the player has at least one of these permissions
%permission_has-none_permission nodes% - whether the player has none of these permissions
%permission_missing_permission nodes%  - returns how many of these permissions the player is missing