Fix nuxeo-platform-importer random import from dedicated web page

• Using mongodb, redis and latest firefox version
• Install nuxeo-platform-importer on a 8.10-SNAPSHOT without a UI package
• Go to the following URL:

http://localhost:8080/nuxeo/site/fileImporter

Select the random import
=> options are not updated accordingly

Fill in the parameters and press "Run"
=> nothing happens, the import is not triggered