Maintain pywps demo with cookiecutter?

# Description

We are using a cookiecutter to setup new pywps projects:
https://github.com/bird-house/cookiecutter-birdhouse

Should we use the cookiecutter to maintain this pywps demo?

Should Flask be an optional part of the cookiecutter?

Potentially we could also move the cookiecutter-birdhouse to the geopython repo as cookiecutter-pywps.

This demo could also replace the Emu WPS:
https://github.com/bird-house/emu

# Environment

- operating system:
- Python version:
- PyWPS version:
- source/distribution
- [ ] git clone
- [ ] Debian
- [ ] PyPI
- [ ] zip/tar.gz
- [ ] other (please specify):
- web server
- [ ] Apache/mod_wsgi
- [ ] CGI
- [ ] other (please specify):

# Steps to Reproduce

# Additional Information