Fixes: 1. Fix /qs paste always create bad paste issue.
2. Sometimes item display will show as Json string (a spigot bug SPIGOT-5964)
New: 1. /qs find now can ignore out-of-stock/space shops (default is disabled)
2. New QuickEventManager used for new protection-checking-listener-blacklist feature, read the comments in config.yml to learn more. (Can be use to resolved the Issue with some crate or autopickup plugins etc.)