Plugin: H5P: Add check to avoid double-loading jquery-ui.min.js - refs #4689

plugin/h5p/index.php

@@ -19,7 +19,7 @@ if ($posCtr === false) {
     $webPath = api_get_path(WEB_PATH);
     if ($ctrAction == 'edit_item' || $ctrAction == 'add_item') {
         $fh .= '<script src="'.$pluginPath.'h5p/resources/js/h5p_extras.js'.$version.'" type="text/javascript" ></script>';
-        $fh .= '<script type="text/javascript" src="'.$webPath.'web/assets/jquery-ui/jquery-ui.min.js"></script>';
+        $fh .= '<script>if (!jQuery.ui) {'."$('body').append('<script src=\"".$webPath."web/assets/jquery-ui/jquery-ui.min.js\"></script>');}</script>";
         $fh .= '<link rel="stylesheet" type="text/css" href="'.$webPath.'web/assets/jquery-ui/themes/smoothness/jquery-ui.min.css">';
         $fh .= '<link rel="stylesheet" type="text/css" href="'.$pluginPath.'h5p/resources/css/window-h5p.css">';
     }