Add missing react-dom js to package data (#4772)

This dependency was omitted when react was added, so it is not installed.

Closes #4771

setupbase.py

@@ -150,6 +150,7 @@ def find_package_data():
         pjoin(components, "jquery-ui", "themes", "smoothness", "images", "*"),
         pjoin(components, "marked", "lib", "marked.js"),
         pjoin(components, "react", "react.production.min.js"),
+        pjoin(components, "react", "react-dom.production.min.js"),
         pjoin(components, "requirejs", "require.js"),
         pjoin(components, "requirejs-plugins", "src", "json.js"),
         pjoin(components, "requirejs-text", "text.js"),