Merge pull request #268 from Alfresco/dev-mvitale-265

Fix drag drop cross browser #265

ng2-components/ng2-alfresco-upload/src/directives/file-draggable.directive.ts

@@ -66,6 +66,7 @@ export class FileDraggableDirective {
         this._preventDefault($event);
 
         let items = $event.dataTransfer.items;
+        if (items) {
             for (let i = 0; i < items.length; i++) {
                 let item = items[i].webkitGetAsEntry();
                 if (item) {
@@ -76,6 +77,11 @@ export class FileDraggableDirective {
                     this.onFilesDropped.emit(files);
                 }
             }
+        } else {
+            // safari or FF
+            let files = $event.dataTransfer.files;
+            this.onFilesDropped.emit(files);
+        }
 
         this._inputFocusClass = false;
     }