Added hidden feature setting for blog post avatar display

Author: Michael-Herzog

src/Smartstore/Engine/SmartConfiguration.cs

@@ -178,6 +178,11 @@ public partial class SmartConfiguration
         /// </summary>
         public int SmtpServerTimeout { get; set; } = 5000;
 
+        /// <summary>
+        /// Defines whether customer can be assigned to a blog post in order to display his avatar.
+        /// </summary>
+        public bool? EnableCustomerAvatarsInBlog { get; set; }
+
         /// <summary>
         /// Gets or sets Google configuration options. 
         /// </summary>