* Fixed Logout Issue on IOS - Safari and Chrome browsers.

• Issue #2979324: Changed the z-index to 10 for the selected view columns check icon, so that it could go over all other position: absolute labels for (Images, Videos, Documents, ...).

- Fixed a warning when trying to fetch concept information for a search space using multiple projects.
- Added the possibility to make facets searchable.
- Added the possibility to choose the date format in the PP GraphSearch configuration
- Added the possibility to choose the link target int the PP GraphSearch configuration.
- Replaced drupal_set_message() and drupal_get_messages() since they became deprecated.

Changes since 8.x-1.7:

• Update typo, composer.json, .editorconfig and code style.
• #2978884: Add support for content revision id as an argument.
• #2929555 by drclaw: Add formatter weight

Issue #2978116 by itcrowd72, Viktor-T: Module stop prune users after update to 1.9