Fixing the XSD location for web-facesconfig_2_2.xsd

Sadly, http://java.sun.com/xml/ns/javaee/web-facesconfig_2_2.xsd redirects to
http://www.oracle.com/technetwork/java/index.html, which is not a valid xsd :/
Merge pull request #42 from xcoulon/faces-config_2.2

Fixing the XSD location for web-facesconfig_2_2.xsd