New feature: Items preview in trader shop   Can be enabled by: 1. defining ENABLE_OLD_CASHSHOP_PREVIEW_PATCH in core.h or by configure flag --enable-old-cashshop-preview-patch 2. Then need apply this nemo patch http://nemo.herc.ws/patches/ExtendOldCashShopPreview/   Feature can works only if option in server side enabled and enabled patch in client side. In other case custom shops will be corrupted   For enable this feature need use this pull request https