AB3594 - Moved the composition root out to UmbracoApplicationBase, and injecting the needed parts from there. Also remove usages of ConfigurationManager from Umbraco.Core

src/Umbraco.Configuration/CoreDebug.cs

@@ -0,0 +1,23 @@
+using System;
+using System.Configuration;
+
+namespace Umbraco.Core.Configuration
+{
+    public class CoreDebug : ICoreDebug
+    {
+        public CoreDebug()
+        {
+            var appSettings = ConfigurationManager.AppSettings;
+            LogUncompletedScopes = string.Equals("true", appSettings[Constants.AppSettings.Debug.LogUncompletedScopes], StringComparison.OrdinalIgnoreCase);
+            DumpOnTimeoutThreadAbort = string.Equals("true", appSettings[Constants.AppSettings.Debug.DumpOnTimeoutThreadAbort], StringComparison.OrdinalIgnoreCase);
+        }
+
+        // when true, Scope logs the stack trace for any scope that gets disposed without being completed.
+        // this helps troubleshooting rogue scopes that we forget to complete
+        public bool LogUncompletedScopes { get; }
+
+        // when true, the Logger creates a mini dump of w3wp in ~/App_Data/MiniDump whenever it logs
+        // an error due to a ThreadAbortException that is due to a timeout.
+        public bool DumpOnTimeoutThreadAbort { get; }
+    }
+}