Remember the URL of the last manually added source

[Gamester17]

Please make Boxee remember the URL of the last manually added source, as today when trying to manually add a source and one types in the wrong URL (or the wrong user-name or password) Boxee only gives you the message "No files found" making you have go make and type in the whole URL again manually which can be annoying if the URL is very long or if you types it wrong a couple of times.