main
tooling: Move email_log.py to development only views.
models: Extract zerver.models.clients.
thumbnail: Do not Camo old thumbor URLs; serve images directly.
devlogin: Filter placeholder realms from a subdomain change.
dev_emails: Disable rate limiting in generate_all_emails view.
help: Add default page to display on /help when help server is off.
webhooks: Rename get_fixture_http_headers to call_fixture_to_headers.
demo-orgs: Generate realm name automatically for demo organizations.
shared: Move icons to web/images/icons.