support for Bootstrap carousel

1) add to html:

a) Dynamical loading of carousel after editing the list:
<script
src="...wp-content/themes/[mytheme]/direct-edit/js/carousel-editor.js"></script>
(use 'copy files to theme' in backend options)

b) if Bootstrap is not used, use these separate files:
<link rel='stylesheet'
href='.../wp-content/plugins/directedit/lib/css/carousel.css'
type='text/css' media='all' />
<script
src=".../wp-content/plugins/directedit/lib/js/carousel.js"></script>
<script
src=".../wp-content/plugins/directedit/lib/js/holder.js"></script> ()

2) copy from direct-edit plugin manually to the snippet file
list-carousel.php (should be done automatically if life were perfect):

3)
use in template like this:

<?php direct_editable( 'list', 'postmeta', array( 'container' => 'div',
'postId' => $post->ID, 'attr' => array ('id' => 'carousel2', 'class' =>
'carousel slide', 'data-ride' => 'carousel' ), 'options' => 'carousel',
'key' => 'carousel1', 'snippet' => 'list-carousel' ) ); ?>

4)
adjust image sizes in
- direct-options.json, "carousel-image" options
- project css
- list-carousel.php (placeholder image using 'holder.js')

5)
When using multiple (different) carousels in a project:
- make a copy of the snippet file "list-carousel.php" and make
adjustments
- in direct-options.json duplicate options for "carousel" and
"carousel-image" and modify
- with multiple carousels on a page, each should get a unique id.