[chronojump] Force sensor: Added tare before calibrate string

[Xavier de Blas <xaviblas src gnome org>]

commit c0478c6793d8a685c6c1085053da86ad771b9137
Author: Xavier de Blas <xaviblas gmail com>
Date:   Mon Apr 9 14:43:35 2018 +0200

    Force sensor: Added tare before calibrate string

 src/gui/forceSensor.cs |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/src/gui/forceSensor.cs b/src/gui/forceSensor.cs
index 85b5292..bfc7af8 100644
--- a/src/gui/forceSensor.cs
+++ b/src/gui/forceSensor.cs
@@ -1313,7 +1313,9 @@ LogB.Information(" fc R ");
 
        private void on_button_force_sensor_adjust_help_clicked (object o, EventArgs args)
        {
-               new DialogMessage("Force sensor adjust data", Constants.MessageTypes.INFO, 
preferences.GetForceSensorAdjustString());
+               new DialogMessage("Force sensor adjust data", Constants.MessageTypes.INFO,
+                               Catalog.GetString("We recommend to tare before calibrating.") + "\n" +
+                               preferences.GetForceSensorAdjustString());
        }
 
        double lastChangedTime; //changeSlideCode