Added recent_changes module.

Revisited hooks management, and added new CMS_HOOK_MANAGER.
Added admin, and other link into navigation menu that goes into first sidebar.
Fixed theme info, and template for sidebar ids.
Better css class name for cms node content.

examples/demo/src/ewf_roc_server_execution.e

@@ -78,6 +78,11 @@ feature -- CMS setup
 			create {CMS_BLOG_MODULE} m.make
 			a_setup.register_module (m)
 
+				-- Recent changes
+			create {CMS_RECENT_CHANGES_MODULE} m.make
+			a_setup.register_module (m)
+
+
 				-- Miscellanious
 			create {CMS_DEBUG_MODULE} m.make
 			a_setup.register_module (m)