[#42627963] Updated nation plan documents field to use Document content type (Entity reference) instead of Field Collection
[#42627963] Added unit tests for CMSNationalPlan node_to_array and node_from_array - without document
[#42627963] Added support for national plans import / export of Document field + updated unit tests
[#42627963] National plan: renamed test class, cleaned up code comments, removed legacy method
[#42627963] National report: created node_to_array and node_from_array methods and unit tests for them
Merge branch 'master' of https://github.com/eaudeweb/cms_modules
[#42627963] Completed national reports import and export; fixed some bugs with national plans
[#42627963] Fixes for National plan and National report tests; still not passing though
Merge branch 'master' of https://github.com/eaudeweb/cms_modules