Change type of checking whether window have on drop possibility.
Reason:
Previously this parameter was checking by class name, so it blocking creating similar objects to miniwindow or inheritance from miniwindow object without changing sources. So it block creating modules with new UI objects working with miniwindowcontainer.
* Added some market offer constraints: offer creation exhaustion and now checks balance to validate sell offers.
* Fixed the depot updating issue (no longer requires updateDepotItemCount function)
* Can now silence the MarketProtocol messages.
* Few minor market fixes.
EgzoT