* upstream/master: (162 commits)
  Grapify the repository API
  Fix wrong link URL
  Add note pointing to limitations section in environments.md
  Clarify the limitation for special chars is for Review Apps
  Change order of limitations list in environments.md
  Add an example of invalid characters to branches for review apps
  Grammar fix in environments.md: s/base/basis
  Add changelog entry for #24276 / !7500
  Allow registering users where the username contains dots (.).
  bump rouge to 2.0.7
  Fix indentation
  Update copy.md with issue guideline updates and merge request guidelines
  Refactor github import to reduce number of API calls
  Fix missing URL from environments docs
  Check all namespaces on validation of new username.
  Allow sorting groups in API
  Use the public CE repo URL instead of the one used in the runner
  Fix typos
  Fix wrong changelog item
  Add missing item for 8.13.6
  ...