T1627 - Fix BeneficiaryMajorRevision GMC request handling (#1941)

* found bug, need to see how to fix it

* fixed 'Local Grade Level' is empty in revision, fixed revision applies all revisions to same type on single child, need to see how to handle update/create

* probably fixed major revision not cleared/updated correctly

* cleanup

* removed data_filter in _json_to_relational_field since it wasn't used. Changed ma mapping of RevisedValues

* reverted all changes in field_to_json

---------

Co-authored-by: Clément <100228798+clementcharmillot@users.noreply.github.com>

child_compassion/models/major_revision.py

@@ -85,6 +85,7 @@ def get_child_field_mapping(self):
  "Last Name": "lastname",
  "Planned Completion Date": "completion_date",
  "Preferred Name": "preferred_name",
+ "Local Grade Level": "local_grade_level",
  }
 
  def get_field_value(self):

child_compassion/static/mappings/child.json

@@ -107,7 +107,7 @@
  "PreferredName": "preferred_name",
  "RevisedValues": {
  "field": "revised_value_ids.name",
- "search_relational_record": true
+ "search_relational_record": false
  },
  "SponsorshipStatus": "sponsorship_status",
  "SponsoredStatus": "sponsorship_status",