Add method #host
Use developer login config option to determine if Disqus is used in developer mode
Refactoring into separate classes

First step for a universal YAML loader with ERB support and Hash to DTO transformation with Morpher (base for new Ducktrap?)
Rename postgres_url to postgres_uri
Merge branch 'master' into substation

Conflicts:
	lib/schnitzelpress/config.rb
	lib/schnitzelpress/helpers.rb
	views/partials/_disqus.slim