[gnome-system-monitor] Added menu quit keyboard shortcut (accel Primary-q)

[Robert Roth <robertroth src gnome org>]

commit 54adc60dac44b64160c00e5a48cfd5113cd35a09
Author: Steven Harms <sjharms gmail com>
Date:   Tue Mar 26 21:19:41 2013 +0200

    Added menu quit keyboard shortcut (accel Primary-q)
    
    Typically when using programs, having a keyboard shortcut is desirable, and
    referenced in the Gnome developer documentation.  This patch adds the Quit
    accelerator to the Gnome System Monitor menu:
    https://developer.gnome.org/hig-book/3.4/input-keyboard.html.en
    
    https://bugzilla.gnome.org/show_bug.cgi?id=695891

 data/menus.ui |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/data/menus.ui b/data/menus.ui
index 476154a..f582813 100644
--- a/data/menus.ui
+++ b/data/menus.ui
@@ -24,6 +24,7 @@
       <item>
         <attribute name="label" translatable="yes">Quit</attribute>
         <attribute name="action">app.quit</attribute>
+        <attribute name="accel">&lt;Primary&gt;q</attribute>
       </item>
     </section>
   </menu>