To keep the H1/titles of new templates consistent with the sticky menu options.
Updated default letter template name from `Untitled` to `New letter template`
Most of the existing platform admin buttons on the service settings
page used to issue GET requests to switch service settings. This
means they weren't protected by CSRF. On top of that as our number
of service permissions increases over time a lot of buttons on the
page made it hard to work with.
To fix these issues we replace most of the buttons with rows in the
platform admin settings table. Each setting has a 'Change' link that
leads to a page with an On/Off switch form.
This removes "research mode" switch completely since we're planning
to deprecate it in the future and we don't expect to switch any new
services into research mode at the moment.
Most service permissions are now handled by a shared endpoint that
is parameterized with the permission name. Some permissions that
require some additional logic before they can be toggled (like document
upload, which requires setting a contact address) have separate
initial endpoints that redirect to `set_service_permission`.
"Archive", "Suspend" and "Resume" actions are kept as buttons since
they display a confirmation banner (which is a CSRF-protected form)
and they're not easily represented as an On/Off switch.
This adds a new OnOffField class that implements a boolean field
that is rendered as two On / Off radio buttons. This allows us to
avoid comparing 'on' and 'off' string values in the views since
the field takes care of transforming form data into python booleans.
This also adds a form class that can be used for any single On / Off
switch forms (e.g. service permissions).
The current user already has a list of service IDs. The current user
- is an API call we have to make anyway to render this page
- is usually cached in Redis
This adds a preview pane which is visible when updating a letter brand.
If JavaScript is enabled, the preview pane shows on the set-letter-branding
page, and submitting the form saves updates the letter brand for a service
immediately. If Javascript is not enabled, there is a separate 'Preview email
branding' page which shows a preview of the brand and has a 'Save' button on it.
