v479

Merge pull request #3871 from alphagov/popular_tasks_cache

Cache most viewed tasks for 12 hours

v478

Merge pull request #3881 from alphagov/dependabot/bundler/rubocop-gov…

v477

Merge pull request #3879 from alphagov/dependabot/bundler/pact-1.66.0

v476

Merge pull request #3878 from alphagov/add-additional-url-for-chat-pr…

v475

Merge pull request #3873 from alphagov/add_guard_clause

Add additional guard clause when we fetch popular tasks from SearchAPI

v474

Merge pull request #3872 from alphagov/graphql-ministers-index

Use GraphQL for rendering Ministers Index page

v472

Merge pull request #3876 from alphagov/dependabot/bundler/gds-api-ada…

v471

Merge pull request #3877 from alphagov/dependabot/npm_and_yarn/stylel…

v470

Merge pull request #3874 from alphagov/dependabot/bundler/mocha-2.6.1

v469

Merge pull request #3875 from alphagov/dependabot/bundler/govuk_publi…