Replace credits block with a widget area, move credits right

colophon_center_widget_area_credits_right.php

add_filter( 'tc_default_widgets' , 'add_credits_widget');
function add_credits_widget( $defaults ) {
  $defaults['credits_widgets'] = array(
      'name'         => __( 'Colophon Credits Widget' , 'customizr' ),
      'description'  => __( 'In the central colophon block' , 'customizr' )
  );
  return $defaults;
}

add_filter('tc_credits_display' , 'display_my_credits_widget', 20);
function display_my_credits_widget() {
  ob_start();
?>
    <div class="<?php echo apply_filters( 'tc_colophon_center_block_class', 'span4' ) ?>">  
      <?php dynamic_sidebar('credits_widgets'); ?>
    </div>
  
<?php
  $html = ob_get_contents();
  if ( $html ) ob_end_clean();
  return $html;
}
// replace back to top with credits
add_action('after_setup_theme', 'disable_pro_credits', 40);
function disable_pro_credits(){
  if ( ! method_exists('TC_fc', 'fc_custom_credits') )
    return;

  remove_filter( 'tc_credits_display', array(TC_fc::$instance, 'fc_custom_credits') );
  add_filter('tc_colophon_right_block', array(TC_fc::$instance, 'fc_custom_credits') );
}