ui/data: cleaned up UI and parsing

* HOT FIX: typename not always correctly split to name hierarchy
* show node main if available as first active token after parsing
* show all contents of namespaces if searched for
* added missing enum type and enum value usages
* added inheritance for structs
* removed MessageActivateToken and replaced it with MessageActivateTokens
* activating correct nodes for clicks in GraphView and CodeView
* no graph change when clicking an edge, but highlighting the edge instead
* only show active nodes without connections when multiple are activated
* fixed snippet sorting to put file that contains declarations on top
* set sizeHints on CodeView and SearchView to increase their initial size

fortune cookie message = Das Leben wird eine positive Wendung nehmen.

src/app/qt/view/graphElements/QtGraphNode.cpp

@@ -4,7 +4,7 @@
 #include <QGraphicsSceneEvent>
 #include <QPen>
 
-#include "utility/messaging/type/MessageActivateToken.h"
+#include "utility/messaging/type/MessageActivateTokens.h"
 #include "utility/messaging/type/MessageGraphNodeMove.h"
 
 #include "qt/graphics/QtGraphicsRoundedRectItem.h"
@@ -395,7 +395,7 @@ void QtGraphNode::onClick()
 {
 	if (m_data && !m_data->isType(Node::NODE_UNDEFINED | Node::NODE_NAMESPACE))
 	{
-		MessageActivateToken(m_data->getId()).dispatch();
+		MessageActivateTokens(m_data->getId()).dispatch();
 	}
 }