ui: Fixes for upcoming release

* improved comment colors in all color schemes
* improved contrasts for dark color scheme
* fixed error locations stay visible when activating file in single file view
* removed scroll speed change listener from search autocompletion because it caused slowdown on macOS
* fixed bounding rects of graph edges to contain arrow
* fixed tooltip list shown with just one element

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

@@ -15,6 +15,7 @@ public:
 		, origin(origin)
 	{
 		setSendAsTask(false);
+		setIsLogged(false);
 	}
 
 	MessageTooltipShow(const std::vector<Id>& sourceLocationIds, const std::vector<Id>& localSymbolIds, TooltipOrigin origin)
@@ -23,6 +24,7 @@ public:
 		, origin(origin)
 	{
 		setSendAsTask(false);
+		setIsLogged(false);
 	}
 
 	static const std::string getStaticType()