!vip for reserved slots

[thomasleveil]

add command !vip <player> to toggle the VIP status for player
VIPs can use the reserved slots system of BF3

implementation

1. find player or return feedback
2. if player in reserved slot list, then remove it and send feedback
3. elif player is not in reserved slot list, then add it and send feedback

[markweirath]

Commands available (for my own reference):

reservedSlotsList.load    Load list of reserved soldier names from file 
reservedSlotsList.save    Save list of reserved soldier names to file 
reservedSlotsList.add <name>  Add <name> to list of players who can use the reserved slots 
reservedSlotsList.remove <name>  Remove <name> from list of players who can use the reserved slots 
reservedSlotsList.clear    Clear reserved slots list 
reservedSlotsList.list    Retrieve list of players who can utilize the reserved slots