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

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

.env.production.sample

@@ -115,6 +115,20 @@ SMTP_FROM_ADDRESS=notifications@example.com
 # S3_ENDPOINT=
 # S3_SIGNATURE_VERSION=
 
+# Google Cloud Storage (optional)
+# Use S3 compatible API. Since GCS does not support Multipart Upload,
+# increase the value of S3_MULTIPART_THRESHOLD to disable Multipart Upload.
+# The attachment host must allow cross origin request - see the description
+# above.
+# S3_ENABLED=true
+# AWS_ACCESS_KEY_ID=
+# AWS_SECRET_ACCESS_KEY=
+# S3_REGION=
+# S3_PROTOCOL=https
+# S3_HOSTNAME=storage.googleapis.com
+# S3_ENDPOINT=https://storage.googleapis.com
+# S3_MULTIPART_THRESHOLD=52428801 # 50.megabytes
+
 # Swift (optional)
 # The attachment host must allow cross origin request - see the description
 # above.