Add settings option to disable friend connection change notifications

misc/toxic.conf.example

@@ -29,6 +29,9 @@ ui = {
   // true to show the welcome message on startup
   show_welcome_msg=true;
 
+  // true to show friend connection change messages on the home screen
+  show_connection_msg=true;
+
   // maximum lines for chat window history
   history_size=700;
 
@@ -57,7 +60,7 @@ audio = {
 
   // preferred audio output device; numbers correspond to /lsdev out
   output_device=0;
-  
+
   // default VAD treshold; float (recommended values are around 40)
   VAD_treshold=40.0;
 };