[gnome-tweak-tool] Use double quotes in .ui file, which are more friendly to intltool

[Piotr Drąg <piotrdrag src gnome org>]

commit 6820ba27b60e1fa3d3f3ee0410ad0108f0d5bd59
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Mon Jul 22 23:06:28 2013 +0200

    Use double quotes in .ui file, which are more friendly to intltool
    
    And also more consistent with the rest of the file.

 data/shell.ui |   18 +++++++++---------
 1 files changed, 9 insertions(+), 9 deletions(-)
---
diff --git a/data/shell.ui b/data/shell.ui
index e89852c..d627b37 100644
--- a/data/shell.ui
+++ b/data/shell.ui
@@ -4,23 +4,23 @@
   <menu id="appmenu">
    <section>
       <item>
-       <attribute name='label' translatable='yes'>_Reset to Defaults</attribute>
-       <attribute name='action'>app.reset</attribute>
+       <attribute name="label" translatable="yes">_Reset to Defaults</attribute>
+       <attribute name="action">app.reset</attribute>
       </item>        
    </section>
    <section>
       <item>
-       <attribute name='label' translatable='yes'>_Help</attribute>
-       <attribute name='action'>app.help</attribute>
+       <attribute name="label" translatable="yes">_Help</attribute>
+       <attribute name="action">app.help</attribute>
       </item>        
       <item>
-       <attribute name='label' translatable='yes'>_About Tweak Tool</attribute>
-       <attribute name='action'>app.about</attribute>
+       <attribute name="label" translatable="yes">_About Tweak Tool</attribute>
+       <attribute name="action">app.about</attribute>
       </item>        
       <item>
-       <attribute name='label' translatable='yes'>_Quit</attribute>
-       <attribute name='action'>app.quit</attribute>
-       <attribute name='accel'>&lt;Primary&gt;q</attribute>
+       <attribute name="label" translatable="yes">_Quit</attribute>
+       <attribute name="action">app.quit</attribute>
+       <attribute name="accel">&lt;Primary&gt;q</attribute>
       </item>        
    </section>      
   </menu>