refs 2723 - added field_excluded_from
refs #2723 - added field in json
refs #2723 - mapped migration with the new field
refs #2723 - added hook for alter form
refs #2723 - field_tags is now selectable list in all content types
refs #2723 - refactored hook
refs 2723 - added tags term
refs 2723 - fixed wrong field
Merge branch '2723_tags_for_publication' of https://github.com/eugenst/osha-website into eugenst-2723_tags_for_publication
Merge branch 'eugenst-2723_tags_for_publication' into develop
Merge branch 'develop' of http://github.com/eu-osha/osha-website into develop
refs #2727 - refactored case studies
refs #2727 - deleted case study content type
Merge branch '2727_refactor_case_studies' of github.com:eugenst/osha-website into 2727_refactor_case_studies