[gnome-documents] mainToolbar: Add comment for translators

[Alessandro Bono <abono src gnome org>]

commit aa23020ac9b09cef0f388183ca4171a00af3b343
Author: Alessandro Bono <abono gnome org>
Date:   Sun Feb 28 23:24:43 2016 +0100

    mainToolbar: Add comment for translators
    
    https://bugzilla.gnome.org/show_bug.cgi?id=762833

 src/mainToolbar.js |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/mainToolbar.js b/src/mainToolbar.js
index 174e15c..db992ba 100644
--- a/src/mainToolbar.js
+++ b/src/mainToolbar.js
@@ -152,6 +152,7 @@ const OverviewToolbar = new Lang.Class({
         builder.add_from_resource('/org/gnome/Documents/ui/view-menu.ui');
         let viewMenu = builder.get_object('viewMenu');
 
+        // Translators: this is the menu to change view settings
         this._viewMenuButton = new Gtk.MenuButton({ tooltip_text: _("View Menu"),
                                                     popover: viewMenu });
         this.toolbar.pack_end(this._viewMenuButton);