IDEA-118383 Git: Contained in branches pane is not scrollable

IntelliJ LAF fix (get rid of description gray background)

platform/vcs-log/impl/src/com/intellij/vcs/log/ui/frame/DetailsPanel.java

@@ -100,6 +100,8 @@ class DetailsPanel extends JPanel implements ListSelectionListener {
         return size;
       }
     };
+    scrollPane.setOpaque(false);
+    scrollPane.getViewport().setOpaque(false);
     scrollPane.setViewportView(myMessageDataPanel);
 
     myContainingBranchesPanel = new ContainingBranchesPanel();