153: [Fix] Lock thumbnail size change during init (#173)

* lock tumbnailsize change during init

* do not save settings when size notification is suppressed

Eve-O-Preview/Presenters/Implementation/MainFormPresenter.cs

@@ -49,6 +49,7 @@ public MainFormPresenter(IApplicationController controller, IMainFormView view,
 
 		private void Activate()
 		{
+			this._suppressSizeNotifications = true;
 			this.LoadApplicationSettings();
 			this.View.SetDocumentationUrl(MainFormPresenter.FORUM_URL);
 			this.View.SetVersionInfo(this.GetApplicationVersion());
@@ -58,6 +59,7 @@ private void Activate()
 			}
 
 			this._mediator.Send(new StartService());
+			this._suppressSizeNotifications = false;
 		}
 
 		private void Minimize()
@@ -87,10 +89,9 @@ private void Close(ViewCloseRequest request)
 
 		private async void UpdateThumbnailsSize()
 		{
-			this.SaveApplicationSettings();
-
 			if (!this._suppressSizeNotifications)
 			{
+				this.SaveApplicationSettings();
 				await this._mediator.Publish(new ThumbnailConfiguredSizeUpdated());
 			}
 		}