[misc bug fixes]

properly hide broadcast failure messages if ignore connection lost is turned on
fix concurent issue for update stats history that happened with new event processing
make get/set additional property thread safe
add ellipse to truncated chat messages on home

SharedLibraryCore/Database/Models/SharedEntity.cs

@@ -1,15 +1,41 @@
-using System;
+using SharedLibraryCore.Interfaces;
+using System;
+using System.Collections.Concurrent;
 using System.ComponentModel.DataAnnotations.Schema;
 
 namespace SharedLibraryCore.Database.Models
 {
-    public class SharedEntity
+    public class SharedEntity : IPropertyExtender
     {
+        private readonly ConcurrentDictionary<string, object> _additionalProperties;
+
         /// <summary>
         /// indicates if the entity is active
         /// </summary>
         public bool Active { get; set; } = true;
 
+        public SharedEntity()
+        {
+            _additionalProperties = new ConcurrentDictionary<string, object>();
+        }
+
+        public T GetAdditionalProperty<T>(string name)
+        {
+            return _additionalProperties.ContainsKey(name) ? (T)_additionalProperties[name] : default;
+        }
+
+        public void SetAdditionalProperty(string name, object value)
+        {
+            if (_additionalProperties.ContainsKey(name))
+            {
+                _additionalProperties[name] = value;
+            }
+            else
+            {
+                _additionalProperties.TryAdd(name, value);
+            }
+        }
+
         ///// <summary>
         ///// Specifies when the entity was created
         ///// </summary>