refs #2572: Added migration utilities, cannot wait any longer
refs #2572: All migration receive absolute path to migration data file
refs #2572: Get rid of 'Categories', replace with 'Tags'
Renamed the constant for the Tags taxonomy name
renamed categories.json to tags.json
Renamed migration file to TYPE.DEST.migrate.inc
Refactor variable to resemble terms
Let's put the constants to use if defined them
Refactored nace codes
Refactored nace codes
Refactored esener migration
Refactored publication_types
Partial migration refactoring, now I can shoot myself
Merge branch '2572_refactor_migrations' of https://github.com/eu-osha/osha-website into 2572_refactor_migrations

Conflicts:
	docroot/sites/all/modules/osha_migration/nace_codes.migrate.inc
Merge branch '2572_refactor_migrations' into develop