Added hidden-anonymous and visible-admin LESS/CSS classes as they have been moved to Vartheme base for features to use

As some time we want to show some basic parts for admin users, and hide theme for anonymous, within some HTML which we do not have any preprocessor PHP control over them.

We could follow that with the following Example empty view

<div class="view-empty">
  <div class="jumbotron text-center">
     <p> There are no blog posts now! </p>
    <a class="btn btn-primary hidden-anonymous visible-admin" href="[site:url]/node/add/varbase_blog/"> Add One Now </a>
  </div>
</div>

Blog section no blog post logged in admin

Blog section no blog post not logged users

Varbase hero slider media with empty slides