make buttons i18n friendly and a better experience

src/node/utils/toolbar.js

@@ -99,7 +99,7 @@ _.extend(Button.prototype, {
     };
     return tag("li", liAttributes,
       tag("a", { "class": this.grouping, "data-l10n-id": this.attributes.localizationId },
-        tag("button", { "class": " "+ this.attributes.class, "title": this.attributes.command })
+        tag("button", { "class": " "+ this.attributes.class, "alt": this.attributes.command, "data-l10n-id": this.attributes.localizationId })
       )
     );
   }

src/static/css/pad.css

@@ -747,6 +747,7 @@ table#otheruserstable {
   font-style: normal;
   font-weight: normal;
   color: #666;
+  cursor: pointer;
 }
 
 .buttonicon::-moz-focus-inner {