Update latest documents, publications and announcements template

[jon-kirwan]

What

https://trello.com/c/th7Nw5lU/623-update-latest-from-world-locations-template-and-locale-publications

Change apply to the following pages:

• announcements https://www.gov.uk/government/announcements.ka?world_locations%5B%5D=all
• publications - https://www.gov.uk/government/publications.de?world_locations%5B%5D=all and
• latest documents https://www.gov.uk/government/latest?world_locations%5B%5D=singapore

Changes include:

• Title and page heading (h1) are now the same for each page
• In "Subscription links" component
  • Removed the 'With copyable feed link' option as this adds an additional h3 which breaks the document outline on these pages
  • Moved component in to separate column
• Replaced Whitehall layout markup / style with grid system
• Changed world location (latest) documents page layout from 'full-width' to 'two-thirds'
• Replaced select_tag in https://github.com/alphagov/whitehall/pull/6252/files#diff-fd350a6c20d48d3a4b48e3e0187e47fa07a0f05d60f68830ce60810cebd44106L13 with "select" component

Why

• Consistent look with other pages
• Use design system styles and component guide components
• Fix document outline issues

Visual changes

Before	After

## Anything else

The feeds component is in a shared partial, which is used by the topical events landing pages e.g. https://www.gov.uk/government/topical-events/2022-events-platinum-jubilee-commonwealth-games-festival-uk, so have included screenshots for this page too as they are affected by some of the changes above.

[chris-gds]

Could some screenshots be included on the PR for ref?

[chris-gds]

I'm not convinced the Announcements pages works as it should however this is out of scope this PR- #6306

[chris-gds]

I think this looks Ok, I think there's some more long term considerations but just needs a rebase.

[chris-gds]

Hey @maxgds neither of us have auth to merge this one on Whitehall - give a look, if you're happy merge?

[maxgds]

what's going on here - is this an "else" or "elsif"?

[jon-kirwan]

I might be wrong... but I think else if correct? The structure of this block seems to be -

    <% if subject.is_a? Organisation %>...
    <% elsif subject.is_a? TopicalEvent %>...
    <% else subject.is_a? WorldLocation %>...    
    <% end %>

So, it looks like the breadcrumb changes based on the subject, since it's a shared page, with "World Location" the default subject.

[maxgds]

This could be tidier if we built the breadcrumbs array in the if and called the component to pass it to later - but it's beyond the scope of what's needed here.

[jon-kirwan]

Okay, yep that would be better. I'll add a backlog ticket.