Enable Bootstrap 3 Hover Dropdowns.

theme.js

(function ($) {
  Drupal.behaviors.mytheme_name = {
    attach: function (context) {      
      // Enable Bootstrap 3 Hover Dropdowns.
      var width = $(document).width();
      if (width >= 976) {
        $('.dropdown-toggle').click(function() { 
          var location = $(this).attr('href'); 
          window.location.href = location; return false; 
        });
      }
    }
  };
})(jQuery);

theme.scss

.dropdown:hover .dropdown-menu {
    display: block;
 }