src: Fixes for release

* clear references count when clearing code view
* fixed scrolling to character in overview lists
* fixed aggregation activation shown in history menu
* fixed same snippet being added twice
* Sourcetrail [Trial] as window title
* fixed undoing trail expand will always reactivate symbol

src/lib_gui/qt/view/QtGraphView.cpp

@@ -327,7 +327,7 @@ void QtGraphView::pressedCharacterKey(QChar c)
 		Vec2i pos = node->getPosition();
 		Vec2i size = node->getSize();
 
-		view->ensureVisibleAnimated(QRectF(pos.x, pos.y, size.x, size.y + view->height() / 3 * 2), 100, 100);
+		view->ensureVisibleAnimated(QRectF(pos.x, pos.y, size.x, size.y + getViewSize().y / 3 * 2), 100, 100);
 	}
 }