Item tracking improvements (#11919)

* Adding TrackedReferencesController

* Adding/changing views

* Adding/Editing js files

* RelationService changes

* RelationRepository changes

* Adding missing translations

* Adding/Modifying tests

* Beginning of #9125 migration

* Introducing a new component + refactoring based on that

* Abstracting + refactoring

* Work on content unpublishing

* Work on media.delete

* Various small changes

* Beginning of #9119 migration

* Changes on content.delete

* Various fixes

* Adding new keys used in the listview bulk actions

* Adding methods to get the items used in relations from array of ids

* Adding the checkLinkedItems function to the trackedReferencesResource

* Passing the selected items from a listview to unpublish and delete

* Adding umb-tracked-references-listview

* Adding umb-tracked-references-listview-table with language column

* Fixes for tracked references

* Changes in listview unpublish dialog

* Changes in listview delete dialog

* Removing Variants logic as it is not currently supported

* Visual fixes

* Closing dialogs on click

* Fix wording

* Fix breaking changes

* Change to a single title "Items in use" instead of 2 different for Content and Media

* No need for obsoleting because we can change new controllers

* Return ActionResult from actions

* V9:  Prevent delete or unpublish of items that have references (#12047)

* Introducing config settings that prevent delete or unpublish of items referenced by other items

* Disable deletion of content items and show a new warning

* Disable deletion of media items and show a new warning

* Disable deletion of list view items

* Disable unpublish and bulk unpublish

* Add a new warning

* V9: Displaying descendants in use as part of item tracking (#12039)

* Replace HasReferencesInDescendants with GetPagedDescendantsInReferences

* Display descendants in use on parent's info tab

* Add getPagedDescendantsInReferences to trackedReferencesResource

* Add lang keys for Descendants in use

* Refactoring controller actions

* Don't call check descendants usage when it is a new item

* rename busfy to busy

* always show references

* rearrange for scrollbar to appear at the edge of the dialog

* use the word referenced instead of used

* change fallback texts

* Added "IsDependency" to relation types

* refactor of umb-tracked-references

* rename checkLinkedItems to getPagedReferencedItems

* rename check to load, to be consistent with the rest.

* Refactored backend . Needs frontend fixes

* Cleanup

* Use filters

* Front-end refactor to match refactored end-points

* Fixed bug + warning

* Fixed query (more then 2100 descensdants) and optimized it (using nested select instead of inner join).

* remove comment

* hideNoneDependencies including varying text for the configuration

* Hack for SqlCE :(

* some final adjustments for item tracking ui

* Unbreak change

Co-authored-by: Niels Lyngsø <niels.lyngso@gmail.com>
Co-authored-by: Bjarke Berg <mail@bergmania.dk>

src/Umbraco.Core/Configuration/Models/ContentSettings.cs

@@ -157,6 +157,8 @@ namespace Umbraco.Cms.Core.Configuration.Models
         internal const string StaticLoginBackgroundImage = "assets/img/login.jpg";
         internal const string StaticLoginLogoImage = "assets/img/application/umbraco_logo_white.svg";
         internal const bool StaticHideBackOfficeLogo = false;
+        internal const bool StaticDisableDeleteWhenReferenced = false;
+        internal const bool StaticDisableUnpublishWhenReferenced = false;
 
         /// <summary>
         /// Gets or sets a value for the content notification settings.
@@ -226,6 +228,18 @@ namespace Umbraco.Cms.Core.Configuration.Models
         [DefaultValue(StaticHideBackOfficeLogo)]
         public bool HideBackOfficeLogo { get; set; } = StaticHideBackOfficeLogo;
 
+        /// <summary>
+        /// Gets or sets a value indicating whether to disable the deletion of items referenced by other items.
+        /// </summary>
+        [DefaultValue(StaticDisableDeleteWhenReferenced)]
+        public bool DisableDeleteWhenReferenced { get; set; } = StaticDisableDeleteWhenReferenced;
+
+        /// <summary>
+        /// Gets or sets a value indicating whether to disable the unpublishing of items referenced by other items.
+        /// </summary>
+        [DefaultValue(StaticDisableUnpublishWhenReferenced)]
+        public bool DisableUnpublishWhenReferenced { get; set; } = StaticDisableUnpublishWhenReferenced;
+
         /// <summary>
         /// Get or sets the model representing the global content version cleanup policy
         /// </summary>