WordPress Cluster 10.1.19 – WordPress Cluster

MU Plugins added:
- Sailthru List Names 1.0.0
- Added global Sailthru List Names ACF options page
Plugins updated:
- Blaize 1.27.0
- PHP updates:
  - Added Sailthru list AJAX call & cache
- JS updates:
  - Added login helper
  - Added Zephr account loading timeout
  - Minor fixes
- DCT UICs 1.3.0
- PHP updates:
  - Added Blaize session ID for cache-clearing on newsletter save
  - Minor fixes
- JS updates:
  - Added "state management" of Sailthru newsletter listings:
  - DCT UICs now "point of truth" for get/set of Sailthru list Local Storage values
  - Sets (caches) AJAX’d Sailthru primary lists in Local Storage for speed
  - Prevents secondary Sailthru lists from entering Local Storage
  - Toggles newsletter UIC visibility per subscription to corresponding list via Local Storage event listener
  - Destroys saved Sailthru lists on logout
  - Added various new JS event listeners for cross-Cluster interoperability:
  - newsletter-subscribe-success
  - newsletter-subscribe-failure
  - zephr-sailthru-lists-set
  - zephr-sailthru-lists-updated
  - dct-uic-ajax-sailthru-lists
  - dct-uic-newsletter-state
  - Fixed undefined function errors (_log(), handleReload())
  - Minor fixes
- CSS updates:
  - Added UIC loading animations
  - Minor fixes
- Other updates:
  - Moved /js and /css directories into shared /assets directory
Themes updated:
- Blocks 2.26.0
- Added newsletter listings functionality:
  - ACF registrations
  - Page template
  - JS
  - CSS
  - Image assets
- Added Sailthru List Names (MU) theme feature support
- JS updates:
  - Minor fixes
- The Courier 4.6.0
- CSS updates:
  - Added newsletter UIC loading styles
  - Added newsletter listings styles
- Press and Journal 4.6.0
- CSS updates:
  - Added newsletter UIC loading styles
  - Added newsletter listings styles

PR: https://github.com/dc-thomson/wordpress/pull/4467