root/pypi: links for ckanext-showcase

root/pypi ckanext-showcase-1.5.1.tar.gz
root/pypi ckanext-showcase-1.4.8.tar.gz
root/pypi ckanext-showcase-1.4.7.tar.gz
root/pypi ckanext-showcase-1.4.6.tar.gz
root/pypi ckanext-showcase-1.0.3.tar.gz
root/pypi ckanext-showcase-1.0.2.tar.gz
root/pypi ckanext-showcase-1.0.0.tar.gz
root/pypi ckanext-showcase-1.0.0b1.tar.gz