Update JabylonFilter.java

The log statements cause an NPE in tomcat:
```
java.lang.NullPointerException
	at javax.servlet.GenericServlet.getServletName(GenericServlet.java:238)
	at javax.servlet.GenericServlet.log(GenericServlet.java:190)
	at org.jabylon.war.JabylonFilter.copyResources(JabylonFilter.java:72)
```