Resolve "check for subject duplicates"

Closes #122 (closed)

smash/web/api_views/subject.py

@@ -177,6 +177,7 @@ def serialize_subject(subject):
     result = {
         "first_name": subject.first_name,
         "last_name": subject.last_name,
+        "date_born": subject.date_born,
         "nd_number": subject.nd_number,
         "screening_number": subject.screening_number,
         "default_location": location,