hide the (currently non-functional) help button

MainWindow.cs

@@ -139,6 +139,9 @@ namespace Buypeeb {
 			this.builder = builder;
 			builder.Autoconnect(this);
 
+			// hide the (currently non-functional) help button
+			((ToolButton) builder.GetObject("HelpButton")).Visible = false;
+
 			var menuButtonFilter = (MenuButton) builder.GetObject("MenuButtonFilter");
 			var menuButtonSort = (MenuButton) builder.GetObject("MenuButtonSort");
 			menuButtonFilter.Child = (Image) builder.GetObject("ImageFilter");

ui/main.glade

@@ -429,7 +429,7 @@
                       </packing>
                     </child>
                     <child>
-                      <object class="GtkToolButton">
+                      <object class="GtkToolButton" id="HelpButton">
                         <property name="visible">True</property>
                         <property name="can_focus">False</property>
                         <property name="tooltip_text" translatable="yes">Help</property>