Fix version for new Firefox Assegnate 5 su 5 stelle

Fix version for new Firefox:
https://addons.mozilla.org/ru/firefox/addon/extended-copy-menu-fix-vers/

Fix version for Firefox 4.0 Assegnate 5 su 5 stelle

Fix version for Firefox 4.0
https://addons.mozilla.org/ru/firefox/addon/extended-copy-menu-fix-vers/