* grafana/master: (24 commits)
  docs: Fix indentation level for OAuth2 config
  docs: update CONTRIBUTING.md
  @grafana/ui - release docs v1 (#15835)
  Minor refactoring of copy tags when saving feature, #15446
  Simple implementation for preserve tags, closes #11627
  Updated prettierignore
  Refactoring of PR #14772
  fix typo in pr template
  add nil/length check when delete old login attempts
  Minor refactoring of new react text panel
  fix allow anonymous server bind for ldap search
  use pure component
  use replaceVariables
  Catch bad regex exception at controller level
  11780: invalid reg value can cause unexpected behaviour
  update
  Add string quote func
  Remove option used to control within browser
  Add pic into actionCard message
  Add new option to set where to open the message url
  ...