fixes #7898 - ensure that format can respond to json / yaml
fixes #7985 - add support for ws:// in secure headers
Fixes #7830 - interfaces api output is class specific

- per type rabl templates
- fixed api docs for interfaces
fixes #7331 - delete unassigned os default templates
i18n - extracting new, updating rails, pulling from tx
Refs #6549: Ensure tests to skip exist to avoid too deep stack.
Refs #7719 - explicitly create .ssh dir in home
Fixes #7733 - Remove hosts.yml fixtures and use FactoryGirl instead