Stores hashed state code in cookie for OAuth logins.

* master: (156 commits)
  Fixed issues with the sanitizie input in text panels, added docs, renamed config option
  build: removes arm32v6 docker image.
  Updated version in package.json to 6.0.0-pre1
  Update CHANGELOG.md
  build: armv6 docker image.
  build: skips building rpm for armv6.
  build: builds for armv6.
  Explore: mini styling fix for angular query editors
  Removed unused props & state in PromQueryField
  chore: Remove logging and use the updated config param
  chore: Reverse sanitize variable so it defaults to false
  feat: wip: Sanitize user input on text panel
  fix: Text panel should re-render when panel mode is changed #14922
  Minor rename of LogsProps and LogsState
  Splitted up LogLabels into LogLabelStats and LogLabel
  Refactored out LogRow to a separate file
  Removed strange edit
  Added link to side menu header and fixed styling
  Moved ValueMapping logic and tests to separate files
  Fixed data source selection in explore
  ...

Fixed issues with the sanitizie input in text panels

XSS sanitize text panels

Added check for null value in ValueMappings and added tests

Logs refactoring

Added link to side menu header and fixed styling

Fixed data source selection in explore

Fix for default datasource query editor