Notify that logging changes take a while

src/freedombone-controlpanel

@@ -474,15 +474,24 @@ function restore_data_remote {
 }
 
 function logging_on_off {
+    logging="no"
     dialog --title "Logging" \
            --backtitle "Freedombone Control Panel" \
            --yesno "\nDo you want to turn logging on?" 7 60
     sel=$?
     case $sel in
-        0) freedombone-logging on;;
-        1) freedombone-logging off;;
+        0) logging="yes";;
         255) return;;
     esac
+
+    clear
+    echo ''
+    echo 'This may take a few seconds. Please wait...'
+    if [[ $logging == "no" ]]; then
+        freedombone-logging off
+    else
+        freedombone-logging on
+    fi
 }
 
 function restore_gpg_key {