fix(notebook): Allow copy operation on modified, read-only

Madhu94 · Madhu94 · commit a5e64c3f779c · 2017-09-20T16:13:06.000+05:30
notebooks Should close #2541
diff --git a/notebook/static/notebook/js/notebook.js b/notebook/static/notebook/js/notebook.js
@@ -2910,7 +2910,7 @@ define([
         var w = window.open('', IPython._target);
         var parent = utils.url_path_split(this.notebook_path)[0];
         var p;
-        if (this.dirty) {
+        if (this.dirty && this.writable) {
             p = this.save_notebook(true);
         } else {
             p = Promise.resolve();
