[gnome-applets] window-buttons: add translator comments

[Alberts Muktupāvels <muktupavels src gnome org>]

commit dd94aa1b188b48cb4270f0e25d4514022c77b49c
Author: Anders Jonsson <anders jonsson norsjovallen se>
Date:   Sun Mar 12 22:57:02 2017 +0100

    window-buttons: add translator comments
    
    https://bugzilla.gnome.org/show_bug.cgi?id=776920

 window-buttons/windowbuttons.ui |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/window-buttons/windowbuttons.ui b/window-buttons/windowbuttons.ui
index dd451e3..e7284fe 100644
--- a/window-buttons/windowbuttons.ui
+++ b/window-buttons/windowbuttons.ui
@@ -763,12 +763,12 @@ Clicked</property>
                                       <object class="GtkEntry" id="button_layout">
                                         <property name="visible">True</property>
                                         <property name="can_focus">True</property>
-                                        <property name="tooltip_text" translatable="yes">Define your custom 
order by using the words:
+                                        <property name="tooltip_text" translatable="yes" 
comments="Translators: minimize, maximize, close should not be translated">Define your custom order by using 
the words:
 minimize, maximize and close
 Separate them by commas (,).
 Do NOT use double values!</property>
                                         <property name="invisible_char">●</property>
-                                        <property name="text" 
translatable="yes">minimize,maximize,close</property>
+                                        <property name="text" translatable="yes" comments="Translators: 
these words should not be translated">minimize,maximize,close</property>
                                       </object>
                                       <packing>
                                         <property name="expand">True</property>