[glom] Export format dialog: Make the TreeView expand so it's actually visible.

[Murray Cumming <murrayc src gnome org>]

commit de1a446599443a1debc5251b9872b7c3ca69caf4
Author: Murray Cumming <murrayc murrayc com>
Date:   Thu Feb 25 14:54:23 2016 +0100

    Export format dialog: Make the TreeView expand so it's actually visible.
    
    This must have been wrong for quite a long time, since GTK+ changed
    its expand system.
    
    Bug #762108 (m.rick.mac)

 data/ui/developer/window_data_layout_export.glade |    6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)
---
diff --git a/data/ui/developer/window_data_layout_export.glade 
b/data/ui/developer/window_data_layout_export.glade
index dfe3b2c..e5c3546 100644
--- a/data/ui/developer/window_data_layout_export.glade
+++ b/data/ui/developer/window_data_layout_export.glade
@@ -14,6 +14,8 @@
       <object class="GtkBox" id="vbox7">
         <property name="visible">True</property>
         <property name="can_focus">False</property>
+        <property name="hexpand">True</property>
+        <property name="vexpand">True</property>
         <property name="orientation">vertical</property>
         <property name="spacing">18</property>
         <child>
@@ -56,8 +58,8 @@
           <object class="GtkBox" id="vbox9">
             <property name="visible">True</property>
             <property name="can_focus">False</property>
-            <property name="hexpand">False</property>
-            <property name="vexpand">False</property>
+            <property name="hexpand">True</property>
+            <property name="vexpand">True</property>
             <property name="orientation">vertical</property>
             <property name="spacing">6</property>
             <child>