[chronojump] Fixed persons manage arrows on new session, load session

[Xavier de Blas <xaviblas src gnome org>]

commit cf47760107283cdbd3110bb1b9f6c9b21d4dd271
Author: Xavier de Blas <xaviblas gmail com>
Date:   Thu Apr 2 18:14:49 2020 +0200

    Fixed persons manage arrows on new session, load session

 src/gui/app1/chronojump.cs | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/src/gui/app1/chronojump.cs b/src/gui/app1/chronojump.cs
index 963c8d36..58c8a423 100644
--- a/src/gui/app1/chronojump.cs
+++ b/src/gui/app1/chronojump.cs
@@ -2414,6 +2414,8 @@ public partial class ChronoJumpWindow
                        resetAllTreeViews(false, true, false); //fill, resetPersons, fillPersons
 
                        vbox_manage_persons.Visible = true;
+                       arrow_manage_persons_up.Visible = true;
+                       arrow_manage_persons_down.Visible = false;
 
                        //show hidden widgets
                        sensitiveGuiNoSession();
@@ -2528,6 +2530,8 @@ public partial class ChronoJumpWindow
                        currentPerson = null;
                        label_top_person_name.Text = "";
                        vbox_manage_persons.Visible = true;
+                       arrow_manage_persons_up.Visible = true;
+                       arrow_manage_persons_down.Visible = false;
                }
 
                //update report