Cabos 0.7.6

Updated Simplified Chinese Localization (thanks! > forest he).
Fixed dead lock at ip2country code.
Fixed downloading error if java does not have the permission to write download folder.
Added "Show file size in bytes" preference.
Added "Filter Results" menu item.
Added [delete] short cut key for "Mark As Spam".
Added [double click] action to perform query in the sidebar.
Improved performance in search result view.
Improved performance of "Find More Sources" function.
Imported ip2country code from "Phex" Gnutella file sharing servant.
Changed spin icon in the sidebar.
Newly created query's result filter will be disabled.