ui: redesigned graph overview and use new list layouting within overview bundles

* overview bundles imitate style of bundled node type
* removed bundle for built-in types
* show contents of overview bundle in vertical list layouted with new ListLayouter
* nodes starting with the same letter are grouped with the letter displayed above
* pressing the letter key will scroll to the group
* also use this list layouting for namespace & package contents
* renamed BucketGrid to BucketLayouter
* moved used functions of GraphPostProcessor to GraphViewStyle and removed GraphPostProcessor

fortune cookie message = Don't be afraid to take that big step

src/lib/utility/Property.h

@@ -12,6 +12,7 @@ public:
 	Property<T>& operator=(const Property<T>& property);
 
 	operator const T&() const;
+    T& operator()() const;
 
 private:
 	T* m_valuePointer;
@@ -47,4 +48,10 @@ Property<T>::operator const T&() const
 	return *m_valuePointer;
 }
 
+template<class T>
+T& Property<T>::operator()() const
+{
+	return *m_valuePointer;
+}
+
 #endif // PROPERTY_H

src/lib/utility/messaging/type/MessageGraphNodeBundleSplit.h

@@ -8,8 +8,10 @@ class MessageGraphNodeBundleSplit
 	: public Message<MessageGraphNodeBundleSplit>
 {
 public:
-	MessageGraphNodeBundleSplit(Id bundleId)
+	MessageGraphNodeBundleSplit(Id bundleId, bool removeOtherNodes = false, bool layoutToList = false)
 		: bundleId(bundleId)
+		, removeOtherNodes(removeOtherNodes)
+		, layoutToList(layoutToList)
 	{
 	}
 
@@ -24,6 +26,8 @@ public:
 	}
 
 	Id bundleId;
+	bool removeOtherNodes;
+	bool layoutToList;
 };
 
 #endif // MESSAGE_GRAPH_NODE_BUNDLE_SPLIT_H