Move commit message history button to the top

In 1.8.1, the Recent Messages dropdown had an understandable name and was toward the top of the commit pane. In 1.9, it has nonsensical icon and has been moved to the bottom. The latter is a bigger problem as good commit messages tend to be long, developers tend to maximize windows, and the list shows many previous messages. The result is that the menu always comes up to the left of the button (not where you're looking) and only shows a subset of the items until you move the cursor to the bottom (and everything shifts). In both cases, it is not nearly as smooth as it was before. Please fix.