Return template name in public API

The use for the public template API is for building caseworking systems
or similar, where you might need a list of templates to pick from (ie
instead of using the Notify web interface to pick from and send a
message).

Right now our API isn’t returning the template name as part of the
response. The name is a useful, human-friendly way of identifying a
template.

This commit changes the response to include the name.

Some clients will need updating before this can be useful.

app/models.py

@@ -494,7 +494,8 @@ class Template(db.Model):
             "created_by": self.created_by.email_address,
             "version": self.version,
             "body": self.content,
-            "subject": self.subject if self.template_type != SMS_TYPE else None
+            "subject": self.subject if self.template_type != SMS_TYPE else None,
+            "name": self.name,
         }
 
         return serialized

app/v2/template/template_schemas.py

@@ -35,9 +35,10 @@ get_template_by_id_response = {
         "created_by": {"type": "string"},
         "version": {"type": "integer"},
         "body": {"type": "string"},
-        "subject": {"type": ["string", "null"]}
+        "subject": {"type": ["string", "null"]},
+        "name": {"type": "string"},
     },
-    "required": ["id", "type", "created_at", "updated_at", "version", "created_by", "body"]
+    "required": ["id", "type", "created_at", "updated_at", "version", "created_by", "body", "name"],
 }
 
 post_template_preview_request = {