- utils/adduser: invalidate redis
 - utils/adduser: accept optional password argument
 - utils/adduser: properly close db conns
 - tests: add creds.py
 - api/storage: return None on user_id failure

 - api.common: make purge_cf return domain_id
 - api.storage: add Storage.get_urltoredir
 - run: remove /api/domains from ratelimiting

 - api.storage: add get_username, get_fspath

 - api.common_auth: use Storage on login_user and token_check
 - requirements: add aioredis
 - run: disable ratelimiting for /api/login, /api/apikey, /api/revoke
 - run: don't raise APIError on x-context fetch fail
 - run: add proper closing of dbs on after_server_stop
 - utils: add stress.py

 - run: Ignore non-/api calls on rl_header_set

UI tests

Closes #1

See merge request elixire/elixire!6

 - api.common: add check_bans
 - api.common_auth: make login_user/token_check use check_bans
 - run: make request middleware use check_bans
 - run: show econfig.BAN_PERIOD on ban_webhook call
 - run: rework X-Context fetching
 - run: only pop x-context on the end of response middleware

 - schema: add bans table
 - api.common: add ban_webhook
 - api.common_auth: add check on bans table
 - api.errors: add Banned
 - api.ratelimit: add Ratelimit._retries
 - config: add USER_BAN_WEBHOOK and BAN_PERIOD
 - run: add handle_ban
 - run: fix issue in global_rl()
 - run: change X-Username to X-Context