Allow chain commands to cycle

[verrier]

The Chain Command function would be so much more useful if u could cycle through the commands instead of firing them off all at once...

example of usable cycle:
leftclick 1: //hpos1
leftclick 2: //hpos2
leftclick 3: //set 1

rightclick: //undo

http://forums.bukkit.org/threads/admn-tikitoolkit-v1-1-7-inventory-slot-based-admin-tools-1060.6850/page-2#post-666364