give test letter api notifications a different filename

so they can be distinguished on the frontend.

Also, some related cleanup:

* don't show test api letters on the frontpage
* make sure the subject is returned from the API for letters
* make sure the letter's address is returned for letters

app/dao/jobs_dao.py

@@ -11,6 +11,7 @@ from app.models import (
     JOB_STATUS_SCHEDULED, JOB_STATUS_PENDING,
     LETTER_TYPE
 )
+from app.variables import LETTER_TEST_API_FILENAME
 from app.statsd_decorators import statsd
 
 
@@ -142,9 +143,18 @@ def dao_get_jobs_older_than_limited_by(job_types, older_than=7, limit_days=2):
 
 
 def dao_get_all_letter_jobs():
-    return db.session.query(Job).join(Job.template).filter(
-        Template.template_type == LETTER_TYPE
-    ).order_by(desc(Job.created_at)).all()
+    return db.session.query(
+        Job
+    ).join(
+        Job.template
+    ).filter(
+        Template.template_type == LETTER_TYPE,
+        # test letter jobs (or from research mode services) are created with a different filename,
+        # exclude them so we don't see them on the send to CSV 
+        Job.original_file_name != LETTER_TEST_API_FILENAME
+    ).order_by(
+        desc(Job.created_at)
+    ).all()
 
 
 @statsd(namespace="dao")

app/dao/notifications_dao.py

@@ -338,7 +338,8 @@ def get_notifications_for_service(
         filters.append(Notification.created_at < older_than_created_at)
 
     if not include_jobs or (key_type and key_type != KEY_TYPE_NORMAL):
-        filters.append(Notification.job_id.is_(None))
+        # we can't say "job_id == None" here, because letters sent via the API still have a job_id :(
+        filters.append(Notification.api_key_id != None)  # noqa
 
     if key_type is not None:
         filters.append(Notification.key_type == key_type)