Try changing the $args you are passing into the register_taxonomy method so that rewrite -> slug includes the development tag
$args = array(
'labels' => $labels,
'public' => true,
'show_in_nav_menus' => false,
'show_ui' => true,
'hierarchical' => true,
'supports' => array('title', 'editor', 'excerpt', 'thumbnail'),
'rewrite' => array('slug' => 'development/section', 'with_front' => true, 'hierarchical' => true),
'query_var' => true
);