Assegnate 5 su 5 stelle

After years this plugin still work and we just have to "enforce" the version availability in the meta-data.
The plugin now suffers from the "Thunderbird has blocked a file from loading into this message." caveat due to a change in security policy from thunderbird.
But i have a patch of the smilieDialog.js file that loads the image as base64 data avoiding this problem, i just would be happy to help. if @Christian wish to update the plugin.
Thierry.Vieville@inria.fr