confab data files as jinja templates
Merge branch 'feature/filterhostsbyrole' into data_templates
Merge branch 'feature/filterhostsbyrole' into data_templates
- support for binary templates
- make environment and host string available in the template rendering context
- use configured hostname instead of the fqdn
- allow xml templates
Merge branch 'data_templates' into feature/sparkle
- data templates tests
- binary template tests
include test files in package data
some improvements to data templates loading code
code review changes

+review CR-NS-192
fixed mime type matching

+review CR-NS-192
new UniqueUnion custom callable to merge lists in the data model

+review CR-NS-192
Merge branch 'feature/sparkle' into develop