Fix version for new Firefox Rated 5 out of 5 stars

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

Fix version for Firefox 4.0 Rated 5 out of 5 stars

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