with python 2.6 support that can be still required for initial setup of SlapOS.

even though there are install_requires and setup_requires...

Also move mariadb buildout instance profile to dynamic template.

{{- parameters.project_public_folder -}} prevents newline.

Let the supervisord of slaprunner managing the instance processes
be managed by supervisord of slapos node.

Fixes problems of process like supervisord escaping control.

Also remove unused variable in nginx-conf.

Also unpin slapos.Cookbook.
Related problem with Jinja2.7 has been fixed in slapos.recipe.template 2.5.

Informations about what failed and what succeeded.