[XProxy] Remove proxy from the model before the list.
[XProxy] Handling urls from scripts in UrlListScript.
[XProxy] Unique proxies.
[XProxy] Save/load the proxies list.
[XProxy] Added RuBlackList script.
[XProxy] Keep last update time.
[XProxy] Explicitly mark scripts as enabled.
[XProxy] Support fetching in multiple tries.
[XProxy] Don't forget to pass the elems.
[XProxy] Better code.