Getting rid of the config file and implementing an appSetting instead

src/Umbraco.Core/Configuration/IGlobalSettings.cs

@@ -57,6 +57,15 @@
         /// </summary>
         bool UseHttps { get; }
 
+        /// <summary>
+        /// Gets a value indicating whether the content dashboard should be available to all users.
+        /// </summary>
+        /// <value>
+        ///     <c>true</c> if the dashboard is visible for all user groups; otherwise, <c>false</c>
+        ///     and the default access rules for that dashboard will be in use.
+        /// </value>
+        bool AllowContentDashboardAccessToAllUsers { get; }
+
         /// <summary>
         /// Returns a string value to determine if umbraco should skip version-checking.
         /// </summary>