Merge branch 'master' into glitch-soc/merge-upstream

Conflicts:
- Gemfile
- Gemfile.lock
- app/controllers/about_controller.rb
- app/controllers/auth/sessions_controller.rb

db/post_migrate/20190927124642_remove_invalid_web_push_subscription.rb

@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+class RemoveInvalidWebPushSubscription < ActiveRecord::Migration[5.2]
+  disable_ddl_transaction!
+
+  def up
+    invalid_web_push_subscriptions = Web::PushSubscription.where(endpoint: '')
+                                                          .or(Web::PushSubscription.where(key_p256dh: ''))
+                                                          .or(Web::PushSubscription.where(key_auth: ''))
+                                                          .preload(:session_activation)
+    invalid_web_push_subscriptions.find_each do |web_push_subscription|
+      web_push_subscription.session_activation&.update!(web_push_subscription_id: nil)
+      web_push_subscription.destroy!
+    end
+  end
+
+  def down; end
+end