资料归集，刷新文件总数

app/public/js/file_detail.js

@@ -197,6 +197,7 @@ $(document).ready(function() {
                 self.dragTree.loadPostData(result);
                 self.filingTree.removeNode(node);
                 self.calcTotalFileCount();
+                self.refreshFileCountHint();
                 if (parent) {
                     const path = parent.getPath();
                     for (const p of path) {