logic: More fixes for release

* Fixed crash on undoing aggregation edge
* Avoid mutex locking in logging classes when logging is disabled
* Readded dark color scheme
* Fixed font size of type label in autocompletion list
* Fixed text drawing in autocompletion list
* Only give camelcase score when no noletter score was given
* Added MessageShowErrors to undo stack
* Select error line in table when undoing MessageShowErrors
* Notify user about new Plugin in description of From Visual Studio project setup
* Fixed row height of Project File Location label in project setup

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

@@ -17,7 +17,10 @@ public:
 		, fromNameHierarchy(fromName)
 		, toNameHierarchy(toName)
 	{
-		setKeepContent(true);
+		if (!isAggregation())
+		{
+			setKeepContent(true);
+		}
 	}
 
 	static const std::string getStaticType()