Force sorting of items in inventory when entering a store (because this can cause auto ids)

git-svn-id: http://svn.net-core.org/repos/t-engine4@1419 51575b47-30f0-44d4-a5cc-537603b46e54

@@ -108,3 +108,10 @@ function _M:descObject(who, what, o)
 		return desc
 	end
 end
+
+--- Actor interacts with the store
+-- @param who the actor who interracts
+function _M:interact(who)
+	who:sortInven()
+	Store.interact(self, who)
+end