[gnome-builder/document-manager] workbench: add text-button class to menubutton.

[Christian Hergert <chergert src gnome org>]

commit 889cb57ae1631827fdbabb0c23ad7c4b1e53c48a
Author: Christian Hergert <christian hergert me>
Date:   Wed Dec 3 11:18:13 2014 -0800

    workbench: add text-button class to menubutton.

 src/resources/ui/gb-workbench.ui |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/resources/ui/gb-workbench.ui b/src/resources/ui/gb-workbench.ui
index 792fdc3..d3d6e3a 100644
--- a/src/resources/ui/gb-workbench.ui
+++ b/src/resources/ui/gb-workbench.ui
@@ -29,6 +29,7 @@
                 <property name="visible">True</property>
                 <style>
                   <class name="image-button"/>
+                  <class name="text-button"/>
                 </style>
                 <child>
                   <object class="GtkImage">