REST mappings: source_contact_info is ignored on POST /mappings

[jvendetti]

POST /mappings accepts source_contact_info in the JSON request body, but the value isn't persisted on the created mapping process.

Steps to reproduce

Send a request like:

curl -i -X POST 'https://data.bioontology.org/mappings' \
  -H 'Content-Type: application/json' \
  -H 'Authorization: apikey token=xxx' \
  -d '{
    "classes": {
      "http://www.co-ode.org/ontologies/pizza/pizza.owl#Pizza": "TESTONTJV",
      "http://www.co-ode.org/ontologies/pizza/pizza.owl#CheeseyPizza": "JVTESTONT1"
    },
    "relation": "http://www.w3.org/2004/02/skos/core#exactMatch",
    "creator": "vendetti",
    "source_contact_info": "jane.doe@stanford.edu",
    "source_name": "Manually generated",
    "comment": "Test mapping created with curl"
  }'

Expected behavior

process.source_contact_info should be "jane.doe@stanford.edu".

Actual behavior

The request returns 201 Created, but process.source_contact_info is null.

Response excerpt:

{
  "process": {
    "name": "REST Mapping",
    "creator": "https://data.bioontology.org/users/vendetti",
    "source": null,
    "relation": "http://www.w3.org/2004/02/skos/core#exactMatch",
    "source_contact_info": null,
    "source_name": "Manually generated",
    "comment": "Test mapping created with curl"
  }
}

The POST handler copies only source, source_name, and comment into the MappingProcess, but not source_contact_info.