Move around the code informing the user about the PR URLs
    
    This code informs the user about the URLs they can use to create a new
    PR with the code they just pushed, or review the existing PR integrating
    this new code.
    
    It should make it easier to read this code and follow the logic.
    
    Signed-off-by: Pierre-Yves Chibon <pingou@pingoured.fr>