Description of problem:
Can't upload a byteman script as child resource on the inventory page of the byteman agent. 


Version-Release number of selected component (if applicable):
RHQ-Server: 4.4.0
rhq-byteman-plugin: 4.4.0
JBoss AS 7 running with byteman 1.2.1 as agent

How reproducible:
happens on each click


Steps to Reproduce:
1. Select a platform with a running byteman (i.e. JBoss AS 7 with byteman as agent)
2. Go to the inventory page an there select the byteman agent
3. Go to the inventory page of the agent 
4. Click the button "Create child" and select "Byteman Script"
5. The error  message "Globally uncaught exception" appears (stack trace see below)
  
Actual results:
Can't upload a byteman script

Expected results:
Upload a script

Additional info:

Exception form Message Center:

com.google.gwt.core.client.JavaScriptException:(TypeError): Cannot read property 'org_rhq_core_domain_configuration_definition_ConfigurationDefinition_templates' of null
--- STACK TRACE FOLLOWS ---
(TypeError): Cannot read property 'org_rhq_core_domain_configuration_definition_ConfigurationDefinition_templates' of null
   at Unknown.org_rhq_enterprise_gui_coregui_client_inventory_resource_factory_ResourceFactoryCreateWizard_ResourceFactoryCreateWizard__Lorg_rhq_core_domain_resource_Resource_2Lorg_rhq_core_domain_resource_ResourceType_2Lorg_rhq_core_domain_content_PackageType_2V(Unknown Source)
   at Unknown.org_rhq_enterprise_gui_coregui_client_inventory_resource_factory_ResourceFactoryCreateWizard$3$1_$onSuccess__Lorg_rhq_enterprise_gui_coregui_client_inventory_resource_factory_ResourceFactoryCreateWizard$3$1_2Lorg_rhq_core_domain_content_PackageType_2V(Unknown Source)
   at Unknown.org_rhq_enterprise_gui_coregui_client_inventory_resource_factory_ResourceFactoryCreateWizard$3$1_onSuccess__Ljava_lang_Object_2V(Unknown Source)
   at Unknown.com_google_gwt_user_client_rpc_impl_RequestCallbackAdapter_$onResponseReceived__Lcom_google_gwt_user_client_rpc_impl_RequestCallbackAdapter_2Lcom_google_gwt_http_client_Request_2Lcom_google_gwt_http_client_Response_2V(Unknown Source)
   at Unknown.org_rhq_enterprise_gui_coregui_client_util_rpc_TrackingRequestCallback_onResponseReceived__Lcom_google_gwt_http_client_Request_2Lcom_google_gwt_http_client_Response_2V(Unknown Source)
   at Unknown.com_google_gwt_http_client_Request_$fireOnResponseReceived__Lcom_google_gwt_http_client_Request_2Lcom_google_gwt_http_client_RequestCallback_2V(Unknown Source)
   at Unknown.com_google_gwt_http_client_RequestBuilder$1_onReadyStateChange__Lcom_google_gwt_xhr_client_XMLHttpRequest_2V(Unknown Source)
   at Unknown.anonymous(Unknown Source)
   at Unknown.com_google_gwt_core_client_impl_Impl_apply__Ljava_lang_Object_2Ljava_lang_Object_2Ljava_lang_Object_2Ljava_lang_Object_2(Unknown Source)
   at Unknown.com_google_gwt_core_client_impl_Impl_entry0__Ljava_lang_Object_2Ljava_lang_Object_2Ljava_lang_Object_2Ljava_lang_Object_2