data: fixes and improvements

* save forward declarations of classes and structs as NODE_UNDEFINED_TYPE
* put whole files on top in snippet sorting
* uses aggregation count as weight in graph layouting instead of adding all edges to graph
* refreshing all views of components on MessageRefresh in ComponentManager
* reloading ApplikatinoSettings on MessageRefresh

src/lib/component/ComponentManager.h

@@ -4,6 +4,9 @@
 #include <memory>
 #include <vector>
 
+#include "utility/messaging/MessageListener.h"
+#include "utility/messaging/type/MessageRefresh.h"
+
 #include "component/Component.h"
 #include "component/ComponentFactory.h"
 
@@ -14,6 +17,7 @@ class ViewFactory;
 class ViewLayout;
 
 class ComponentManager
+	: public MessageListener<MessageRefresh>
 {
 public:
 	static std::shared_ptr<ComponentManager> create(ViewFactory* viewFactory, StorageAccess* graphAccess);
@@ -26,6 +30,8 @@ private:
 	ComponentManager();
 	ComponentManager(const ComponentManager&);
 
+	void handleMessage(MessageRefresh* message);
+
 	std::shared_ptr<ComponentFactory> m_componentFactory;
 
 	std::vector<std::shared_ptr<CompositeView>> m_compositeViews;