Add entry's title for edit entry screen.

config.yaml

callbacks:
    MT::App::CMS::template_param.edit_entry: >
        sub {
            my ( $cb, $app, $param, $tmpl ) = @_;
            if ( $param->{ id } ) {
                my $title_tags = $tmpl->getElementsByName( 'page_title' );
                for my $tag ( @$title_tags ) {
                    my $value = $tag->getAttribute( 'value' );
                    my $title = $param->{ title };
                    $title = MT::Util::encode_html( $title ) if $title;
                    $title = MT->translate( 'Untitled' ) unless $title;
                    $title .= ' - ' . $value;
                    $tag->setAttribute( 'value', $title );
                }
            }
        }