Fix the pagination links in the "My PRs" page
    
    We were using the macro but not importing it so when it was actually try
    to add the pagination, it would raise a 500 error.
    Similarly, we were not passing to the template the "page" variable so we
    couldn't pass it to the macro and if we tried we would get another 500
    error.
    
    Signed-off-by: Pierre-Yves Chibon <pingou@pingoured.fr>