UseItemOnSelf

Function:

 * boolean useItemOnSelf(item)

Parameters:

 * item - can be item id/name

Return value:

 * This function return an boolean indicating if items were succesfuly used. Returns true if success, false if failure.

Description:

 * This function can be used to use item on self. It tires to find item on hotkeys first, if there is no item on hotkeys then it tires ti find item in opened containers and use it "manually". If this fails too, then it returns false.