Merge branch 'master' into ci/api-builds

* master: (108 commits)
  Fix project transfer e-mail sending incorrect paths in e-mail notification
  Update CHANGELOG
  Use Gitlab::CurrentSettings for InfluxDB
  Write to InfluxDB directly via UDP
  Strip newlines from obfuscated SQL
  Add hotfix that allows to access build artifacts created before 8.3
  note votes methids implementation
  When reCAPTCHA is disabled, allow registrations to go through without a code
  Downcased user or email search for avatar_icon.
  Handle missing settings table for metrics
  Fix broken link in permissions page [ci skip]
  reCAPTCHA is configurable through Admin Settings, no reload needed.
  Fixed syntax in gitlab.yml.example
  Move InfluxDB settings to ApplicationSetting
  Fix spelling mistake, thanks Connor.
  Restart settings are moved too.
  Hotfix for builds trace data integrity
  add issue weight to contributing
  Added host option for InfluxDB
  Fixed styling of MetricsWorker specs
  ...