Description of problem:
Platform issue for GTNWSRP-353

Calling the getPortletProperties method fails with a NullPointerException if setPortletProperties has been called before for the same portlet handle, including a property not declared in portlet.xml.


Steps to Reproduce:
1. invoke v1:clonePortlet to get the portlet handle
2. invoke v1:setPortletProperties using this handle. The important part here is to add a portlet property which is NOT defined in the portlet.xml file
3. invoke v1:getPortletProperties using the portlet handle
  
Actual results:
ERROR [org.jboss.ws.core.jaxws.SOAPFaultHelperJAXWS] SOAP request exception java.lang.NullPointerException
	at org.gatein.wsrp.producer.handlers.PortletManagementHandler.getPortletProperties(PortletManagementHandler.java:606)
	at org.gatein.wsrp.producer.WSRPProducerImpl.getPortletProperties(WSRPProducerImpl.java:295)
	at org.gatein.wsrp.endpoints.v1.PortletManagementEndpoint.getPortletProperties(PortletManagementEndpoint.java:380)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597) 


Expected results:
getPortletProperties returns the list of portlet properties


Additional info: