[seahorse] add new shortcut: f10: Open menu

[Niels De Graef <nielsdg src gnome org>]

commit abc9ba50ace4fea54101e6a5c30dd099c3e2dd49
Author: Sabri Ünal <libreajans gmail com>
Date:   Sat Feb 15 08:21:51 2020 +0300

    add new shortcut: f10: Open menu

 data/gtk/help-overlay.ui    | 7 +++++++
 src/seahorse-key-manager.ui | 1 +
 2 files changed, 8 insertions(+)
---
diff --git a/data/gtk/help-overlay.ui b/data/gtk/help-overlay.ui
index 40c67434..a0627301 100644
--- a/data/gtk/help-overlay.ui
+++ b/data/gtk/help-overlay.ui
@@ -14,6 +14,13 @@
                 <property name="title" translatable="yes" context="shortcut window">Help</property>
               </object>
             </child>
+            <child>
+              <object class="GtkShortcutsShortcut">
+                <property name="visible">1</property>
+                <property name="accelerator">F10</property>
+                <property name="title" translatable="yes" context="shortcut window">Open menu</property>
+              </object>
+            </child>
             <child>
               <object class="GtkShortcutsShortcut">
                 <property name="visible">1</property>
diff --git a/src/seahorse-key-manager.ui b/src/seahorse-key-manager.ui
index e62a0ddf..40b1bf7b 100644
--- a/src/seahorse-key-manager.ui
+++ b/src/seahorse-key-manager.ui
@@ -313,6 +313,7 @@
                     <property name="can_focus">True</property>
                     <property name="focus_on_click">False</property>
                     <property name="menu-model">main_menu</property>
+                    <accelerator key="F10" signal="activate"/>
                     <child>
                       <object class="GtkImage">
                         <property name="visible">True</property>