Make meta email preview meta info wrap nicely

Because the email addresses can get pretty long, and have no spaces in
them, they sometimes break out of their containing box. This looks messy
and causes horizontal scrolling.

app/assets/stylesheets/components/email-message.scss

@@ -28,6 +28,7 @@ $email-message-gutter: $gutter * 2;
     td {
       width: 99%;
       padding-right: $email-message-gutter;
+      word-break: break-word;
     }
 
   }