Let project owner receive notifications on new language request

Issue #636
Signed-off-by: Michal Čihař <michal@cihar.com>

weblate/accounts/models.py

@@ -93,8 +93,15 @@ def notify_new_language(subproject, language, user):
         subproject.project,
         user
     )
+    users = set()
     for subscription in subscriptions:
         subscription.notify_new_language(subproject, language, user)
+        users.add(subscription.user_id)
+
+    if subproject.project.owner and subproject.project.owner_id not in users:
+        subproject.project.owner.profile.notify_new_language(
+            subproject, language, user
+        )
 
     # Notify admins
     send_notification_email(

weblate/accounts/tests.py

@@ -486,10 +486,11 @@ class NotificationTest(ViewTestCase):
         )
 
     def test_notify_new_language(self):
+        second_user = self.second_user()
         notify_new_language(
             self.subproject,
             Language.objects.filter(code='de'),
-            self.second_user()
+            second_user
         )
 
         # Check mail (second one is for admin)
@@ -499,6 +500,17 @@ class NotificationTest(ViewTestCase):
             '[Weblate] New language request in Test/Test'
         )
 
+        # Add project owner
+        self.subproject.project.owner = second_user
+        notify_new_language(
+            self.subproject,
+            Language.objects.filter(code='de'),
+            second_user,
+        )
+
+        # Check mail (second one is for admin)
+        self.assertEqual(len(mail.outbox), 5)
+
     def test_notify_new_contributor(self):
         unit = self.get_unit()
         notify_new_contributor(