Added blog module as example, this is far from being a real blog module.

but this is an example about on to add a new content type, and support it.
Fixed new node form workflow.

The current state is not final, it requires many changes, but for now, it implements a node editing workflow.

examples/demo/src/ewf_roc_server.e

@@ -144,6 +144,10 @@ feature -- CMS setup
 			create {CMS_DEMO_MODULE} m.make
 			m.enable
 			a_setup.register_module (m)
+
+			create {CMS_BLOG_MODULE} m.make
+			m.enable
+			a_setup.register_module (m)
 		end
 
 	setup_storage (a_setup: CMS_SETUP)