Update home.lang
current version plugin {ok}

I've kept this string in English, as it would receive more high quality and up-to-date results than if we translate it…
Update about.lang
Update products.lang
Update contribute.lang
Update tabzilla.lang
Update whatsnew.lang
Update whatsnew.lang
Merge branch 'master' of github.com:MozillaIsrael/mozilla.org-he