+ Added a check to see if the auction player exists when running a command that will open an auction GUI, if they're not in the list add them. There were two reports where the auction command will throw an error for some users, this was because auction house failed to add that player to it's temporary storage when they joined.

+ Added the following placeholder %buyer_name% for the itemsold lang option. New installs of auction house will generate the following message by default:
"&eYou sold &6%item% &eto &6%buyer_name% &efor &a%price%"