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/QtGraphEdge.cpp

@@ -7,7 +7,6 @@
 #include <QPainter>
 #include <QPen>
 
-#include "utility/messaging/type/MessageActivateToken.h"
 #include "utility/messaging/type/MessageActivateTokens.h"
 
 #include "component/view/graphElements/GraphNode.h"
@@ -460,11 +459,15 @@ void QtGraphEdge::onClick()
 	if (isAggregation())
 	{
 		const std::set<Id>& ids = getData()->getComponent<TokenComponentAggregation>()->getAggregationIds();
-		MessageActivateTokens(std::vector<Id>(ids.begin(), ids.end())).dispatch();
+		MessageActivateTokens message(std::vector<Id>(ids.begin(), ids.end()));
+		message.isAggregation = true;
+		message.dispatch();
 	}
 	else
 	{
-		MessageActivateToken(getData()->getId()).dispatch();
+		MessageActivateTokens message(getData()->getId());
+		message.isEdge = true;
+		message.dispatch();
 	}
 }