Renames the help article on custom profile fields to reflect that
its content is not just about adding fields.
Adds a redirect from the old URL to the new URL and updates internal
links, linking to #add-a-custom-profile-field where appropriate.
Fixes#23170.
Adds a new help center article focused on managing a single
user's stream subscriptions.
Creates a shared file for instructions to navigate to a user's
full profile via the right sidebar, which is used in three help
center articles.
Fixes#21795.
This renames references to user avatars, bot avatars, or organization
icons to profile pictures. The string in the UI are updated,
in addition to the help files, comments, and documentation. Actual
variable/function names, changelog entries, routes, and s3 buckets are
left as-is in order to avoid introducing bugs.
Fixes#11824.