[gnome-boxes] i18n: Add translator comments

[Christophe Fergeau <teuf src gnome org>]

commit d9f9ff856028ff2e51b913cc570d1fd5a3eb5850
Author: Christophe Fergeau <cfergeau redhat com>
Date:   Wed Sep 5 13:02:13 2012 +0200

    i18n: Add translator comments
    
    When proofreading the French translation, I realized we had 2
    plural strings that are not easy to translate without additional
    context. This adds comments to help translators know what these
    strings are about.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=683402

 src/topbar.vala     |    2 ++
 src/vm-creator.vala |    1 +
 2 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/src/topbar.vala b/src/topbar.vala
index 8cb2f9b..05e86fb 100644
--- a/src/topbar.vala
+++ b/src/topbar.vala
@@ -121,6 +121,8 @@ private class Boxes.Topbar: Boxes.UI {
     private void update_selection_label () {
         var items = App.app.selected_items.length ();
         if (items > 0)
+            // This goes with the "Click on items to select them" string and is about selection of items (boxes)
+            // when the main collection view is in selection mode.
             selection_toolbar.set_labels (ngettext ("%d selected", "%d selected", items).printf (items), null);
         else
             selection_toolbar.set_labels (null, _("Click on items to select them"));
diff --git a/src/vm-creator.vala b/src/vm-creator.vala
index 0bfcf27..eb13d6f 100644
--- a/src/vm-creator.vala
+++ b/src/vm-creator.vala
@@ -218,6 +218,7 @@ private class Boxes.VMCreator {
         if (progress < 0)
             return;
 
+        // This string is about automatic installation progress
         machine.info = ngettext ("%d%% Installed", "%d%% Installed", progress).printf (progress);
         prev_progress = progress;
         updating_install_progress = false;