2.2.1 - Breadcrumbs and bugfixes

• breadcrumbs instead of string for the current path #96;
• improved determining of active context during "select" action;
• implemented postMessage communication capability on "select" action;
• demo page new examples: simple js window, fancybox iframe, tinyMCE 4 iframe;
• updated translations in [el] and [fr] language files;
• bugfix: scrollbar issues #98;
• bugfix: sorting in list view doesn't work #97;
• bugfix: file and folder info isn't updated after the file has been modified #95;
• bugfix: (PHP connector) images uploads are failed in case "imagesOnly" configuration option is enabled #74;