[gnome-system-monitor] Set the icon name for the application window

[Robert Roth <robertroth src gnome org>]

commit fdac943f8f900690372e23ecd9caec46e7b832a9
Author: Robert Roth <robert roth off gmail com>
Date:   Mon Aug 31 16:45:41 2015 +0300

    Set the icon name for the application window

 data/interface.ui |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/data/interface.ui b/data/interface.ui
index dfada56..9c0dac7 100644
--- a/data/interface.ui
+++ b/data/interface.ui
@@ -6,6 +6,7 @@
     <property name="title" translatable="yes">System Monitor</property>
     <property name="default_width">440</property>
     <property name="default_height">495</property>
+    <property name="icon_name">utilities-system-monitor</property>
     <child type="titlebar">
       <object class="GtkHeaderBar" id="header_bar">
         <property name="visible">True</property>