Rewrite gever setup

  - Introduce two zcml directives to configure deployments and ldap profiles.
  - Simplify deloyment form, remove multi-client configuration options.
  - Add custom setuphandlers for local roles, initial repository and document templates.
  - Configure development options and add environment variable to enable them easily.
  - Update branding, add onegovgever logo.

Closes #368
This is a copy of the ``ftw.inflator`` pipeline. The only change is the two added sections to handle initial file versions. I wanted to introduce as few changes as possible -  these sections might not be needed now for template-setup but they do no harm just being there.