Add an "All agency pages" option for Alert placement

The Department of Revenue (DOR) is requesting that an "All agency pages" option be added to the Alert placement section for users when creating Drupal alerts.

An example for when an All agency feature would be beneficial was recently — when DOR received a request from the Governor’s Office to place a notice/alert on all of DOR’s pages.

Another example would be when DOR’s Commissioner or Child Support’s Deputy Commissioner has a message for their viewing audience.

DOR thinks this feature will be a very helpful and reasonable addition to the alert placement section.

Example:
Alert placement
Site wide alerts appear at the top of every page on the site. Page alerts appear below the menu on a specific group of pages selected by the author of the alert. NOTE: Only users with the special role of Emergency Alert author are permitted to create site wide alerts.
• Site wide on all pages
• On specific pages
• NEW FEATURE — All agency pages

Start by locating the Drupal alert placement configuration and how site-wide and page-specific alerts are selected. Define how an “All agency pages” choice should behave for alert authors, then verify that alerts appear across the intended agency pages without changing the existing placement options.