Ensure the comment & close button shows up for the author
    
    We had a bug where the person who opened a ticket could close it
    via the button at the top right above the meta-data but couldn't
    use the "Comment & Close" button.
    This commit fixes that.
    
    Fixes https://pagure.io/pagure/issue/4150
    
    Signed-off-by: Pierre-Yves Chibon <pingou@pingoured.fr>