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/component/controller/helper/DummyNode.h

@@ -6,11 +6,10 @@
 #include "utility/utility.h"
 #include "utility/utilityString.h"
 
+#include "data/graph/Node.h"
 #include "data/graph/token_component/TokenComponentAccess.h"
 #include "data/name/NameHierarchy.h"
 
-class Node;
-
 // temporary data structure for (visual) graph creation process
 struct DummyNode
 {
@@ -68,6 +67,8 @@ public:
 		, bundleId(0)
 		, layoutBucket(0, 0)
 		, bundledNodeCount(0)
+		, bundledNodeType(Node::NODE_UNDEFINED)
+		, textNode(false)
 	{
 	}
 
@@ -83,7 +84,7 @@ public:
 
 	bool isExpandToggleNode() const
 	{
-		return !isGraphNode() && !isAccessNode() && !isBundleNode() && !isQualifierNode();
+		return !isGraphNode() && !isAccessNode() && !isBundleNode() && !isQualifierNode() && !isTextNode();
 	}
 
 	bool isBundleNode() const
@@ -96,6 +97,11 @@ public:
 		return qualifierName.size();
 	}
 
+	bool isTextNode() const
+	{
+		return textNode;
+	}
+
 	bool isExpanded() const
 	{
 		return expanded;
@@ -269,9 +275,13 @@ public:
 	// BundleNode
 	BundledNodesSet bundledNodes;
 	size_t bundledNodeCount;
+	Node::NodeType bundledNodeType;
 
 	// QualifierNode
 	NameHierarchy qualifierName;
+
+	// TextNode
+	bool textNode;
 };
 
 #endif // DUMMY_NODE_H