Add stream_id to page_params.{subscriptions,unsubscribed}

This isn't used by the client yet, but it should be harmless.

(imported from commit e09ac65ca802f5cf16375b8a93d34e0dfbcb76b4)

static/js/subs.js

@@ -358,6 +358,7 @@ function populate_subscriptions(subs, subscribed) {
                                            invite_only: elem.invite_only,
                                            notifications: elem.notifications, subscribed: subscribed,
                                            email_address: elem.email_address,
+                                           stream_id: elem.stream_id,
                                            subscribers: elem.subscribers,
                                            description: elem.description});
         sub_rows.push(sub);

zerver/lib/actions.py

@@ -897,6 +897,7 @@ def notify_subscriptions_added(user_profile, sub_pairs, stream_emails, no_log=Fa
 
     # Send a notification to the user who subscribed.
     payload = [dict(name=stream.name,
+                    stream_id=stream.id,
                     in_home_view=subscription.in_home_view,
                     invite_only=stream.invite_only,
                     color=subscription.color,
@@ -1912,6 +1913,7 @@ def gather_subscriptions_helper(user_profile):
                        'invite_only': stream["invite_only"],
                        'color': sub["color"],
                        'notifications': sub["notifications"],
+                       'stream_id': stream["id"],
                        'description': stream["description"],
                        'email_address': encode_email_address_helper(stream["name"], stream["email_token"])}
         if subscribers is not None:

zerver/test_events.py

@@ -280,6 +280,7 @@ class EventsRegisterTest(AuthedTestCase):
                 ('in_home_view', check_bool),
                 ('name', check_string),
                 ('notifications', check_bool),
+                ('stream_id', check_int),
                 ('subscribers', check_list(check_int)),
             ])
         )