Enable utf-8 for all JSP's

Don't have to put pageEncoding="utf-8" in all JSP pages

  <jsp-config>
    <jsp-property-group>
      <url-pattern>*.jsp</url-pattern>
      <page-encoding>utf-8</page-encoding>
      <!-- This works only on Servlet 2.5+ compatible servlet containers
         (like Tomcat 6.x, Resin 3.1+) -->
      <trim-directive-whitespaces>true</trim-directive-whitespaces>
    </jsp-property-group>
  </jsp-config>