Access to Memory (AtoM)

This feature will add a Jobs page to the Manage menu, and will introduce the ability for resource-intensive tasks to run asynchronously in the background, allowing users to continue using the site while they are performed, rather than relying on tasks executing through the browser - known to have timeout limits preventing large operations from completing.

A jobs page, where the status of current and completed jobs can be viewed and managed, will also be introduced (available via Manage > Jobs). A couple screenshots of this page have been attached to this issue. The Jobs page will also allow users to download a simple CSV report of completed jobs and their status.

For now in 2.2, the job scheduler is being introduced to support Finding aid generation - described in #7462, #7723, and #7615. In the future, other resource intensive tasks known to timeout have the potential to be reimplemented as jobs, including:

• Bulk operations - move, delete, edit, search/replace, import, export, update publication status
• Large tasks: large delete/move/edit/publication update tasks for nodes with many children
• The generation of other kinds of reports
• Maintenance activities (regular re-indexes on a schedule, or cache clears, etc)