bugfixes/enhancements

prevent users from trying to set the console's level to owner
fix issue with setting multiple owners
update/improve unit tests

Tests/ApplicationTests/Mocks/EventHandlerMock.cs

@@ -0,0 +1,28 @@
+using SharedLibraryCore;
+using SharedLibraryCore.Interfaces;
+using System.Collections.Generic;
+
+namespace ApplicationTests.Mocks
+{
+    class EventHandlerMock : IEventHandler
+    {
+        public IList<GameEvent> Events = new List<GameEvent>();
+        private readonly bool _autoExecute;
+
+        public EventHandlerMock(bool autoExecute = false)
+        {
+            _autoExecute = autoExecute;
+        }
+
+        public void HandleEvent(IManager manager, GameEvent gameEvent)
+        {
+            Events.Add(gameEvent);
+
+            if (_autoExecute)
+            {
+                gameEvent.Owner?.ExecuteEvent(gameEvent);
+                gameEvent.Complete();
+            }
+        }
+    }
+}