Nikola WebApp is not available anymore. It has been replaced by Coil CMS.
Coil CMS is a full-featured CMS, ready to be used everywhere from small single-user sites environments to big corporate blogs. The most basic setup does not require a database and can be done in 2 minutes.
Coil setup guide: http://coil.readthedocs.org/admin/setup/
- coil (Python package)
You can report issues with this plugin and request help via GitHub Issues.