Compliance: Moves add- and amend_fields to compliance_check

* Due to missing generality, the functions add_fields and
  amend_fields are moved from utils.py to compliance_check.py

Signed-off-by: Martin Vesper <martin.vesper@cern.ch>
Merge pull request #14 from mvesper/journal_dependend_compliance_check

Compliance: Moves add- and amend_fields to compliance_check