We are porting the current help center docs to the new help center.
Porting the display_host variable to the new help center is a tricky
task and it is not worth to put in the effort for that just for 3 uses
of that variable.
The subdomain and host parts are already used within zulip_url, api_url,
this commit adds them as context properties themselves, so that they
can be used in email addresses and URLs without the URI scheme,
increasing uniformity.
The new context properties `display_host` and `display_subdomain` are
usable in the Help, API docs and Policies.
Occurrences of `*.zulipchat.com` have been updated to use them.
Renames file and redirects existing links to "help/user-roles" as
the previous content tracks to that current file's content.
Updates existing links (excluding ReadtheDocs) to go to either
"help/user-roles" or "help/manage-permissions" depending on which
help center article applies to the content.
In the help center and production documentation, replace links to
the "Getting your organization started with Zulip" guide to the
new "Moving to Zulip" guide.
The administrator fills out the API token field as e.g.
Bearer secret123
So let's write that as Bearer <token> to make it clear which part of
that expression is to be replaced.
This adds support for syncing user role via the newly added "role"
attribute, which can be set to either of
['owner', 'administrator', 'moderator', 'member', 'guest'].
Removes durable=True from the atomic decorator of do_change_user_role,
as django-scim2 runs PATCH operations in an atomic block.
These files are not Jinja2 templates, so there's no reason that they needed
to be inside `templates/zerver`. Moving them to the top level reflects their
importance and also makes it feel nicer to work on editing the help center content,
without it being unnecessary buried deep in the codebase.
