[pitivi] i18n: Clarify the "Contributors" paragraph in the about dialog for translators

[Jean-François Fortin Tam <jfft src gnome org>]

commit 4adec8c6686812626d95acf9576188130934c40e
Author: Jean-François Fortin Tam <nekohayo gmail com>
Date:   Sat Sep 28 22:52:38 2013 -0400

    i18n: Clarify the "Contributors" paragraph in the about dialog for translators
    
    Fixes bug #709003

 pitivi/mainwindow.py |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/pitivi/mainwindow.py b/pitivi/mainwindow.py
index 1f018bc..47275a2 100644
--- a/pitivi/mainwindow.py
+++ b/pitivi/mainwindow.py
@@ -729,6 +729,7 @@ class PitiviMainWindow(Gtk.Window, Loggable):
                    "Alessandro Decina <alessandro decina collabora co uk>",
                    "Brandon Lewis <brandon_lewis berkeley edu>",
                    "",
+                   # Translators: this paragraph is to be translated, the list of contributors is shown 
dynamically as a clickable link below it
                    _("Contributors:\n" +
                    "A handwritten list here would...\n" +
                    "• be too long,\n" +