re-enable-vc-element.php

/*
 * Re-add disabled element
 * http://stackoverflow.com/questions/7225070/php-array-delete-by-value-not-key
 *
 * List of diabled elements:
 * 'vc_section',
 * 'vc_tour', // deprecated
 * 'vc_btn', // deprecated
 * 'vc_tta_accordion',
 * 'vc_tta_tabs',
 * 'vc_tta_pageable',
 * 'vc_round_chart',
 * 'vc_line_chart',
 * 'vc_text_separator',
 * 'vc_facebook',
 * 'vc_tweetmeme',
 * 'vc_googleplus',
 * 'vc_pinterest',
 * 'vc_images_carousel',
 * 'vc_tour',
 * 'vc_teaser_grid',
 * 'vc_posts_grid',
 * 'vc_carousel',
 * 'vc_posts_slider',
 * 'vc_button2',
 * 'vc_btn',
 * 'vc_cta_button',
 * 'vc_cta_button2',
 * 'vc_basic_grid',
 * 'vc_media_grid',
 * 'vc_masonry_grid',
 * 'vc_masonry_media_grid',
 */
function readd_el( $disabled_elements ) {

	// replace vc_basic_grid by your element slug
	if ( ( $key = array_search( 'vc_basic_grid', $disabled_elements ) ) !== false) {
		unset( $disabled_elements[ $key ] );
	}

	// replace vc_media_grid by your element slug
	if ( ( $key = array_search( 'vc_media_grid', $disabled_elements ) ) !== false) {
		unset( $disabled_elements[ $key ] );
	}

	return $disabled_elements;
}
add_filter( 'wvc_disabled_elements', 'readd_el' );