bug fix: dropdown-menu fontSize now persists page changes

Signed-off-by: Matheus Agio Nerone <man13@inf.ufpr.br>

app/assets/javascripts/application.js

@@ -21,6 +21,7 @@ $(document).ready(function(){
   size_c = readCookie('fontSize');
   if (size_c != null) {
     document.body.style.fontSize = size_c + 'px';
+    $('.dropdown-menu').css('fontSize', document.body.style.fontSize);
   }
   Contrast();
 });