merge r6675 from branch 2.1 to trunk

complement to r6657: having a new key for the admin menu is a good thing but
the "Menu Management" label is not coherent with other admin menu labels.
Furthermore, all languages already have the word "Menu" in common.lang.php, no
need to display an english "Menu Management" if the translation is missing.



git-svn-id: http://piwigo.org/svn/trunk@6676 68402e56-0260-453c-a942-63ccdbb3a9ee

language/ar_SA/admin.lang.php

@@ -619,4 +619,5 @@ $lang['Subscribe %s'] = 'Subscribe %s';
 $lang['Subscribe %s to Piwigo Announcements Newsletter'] = 'اشترك  %s لـ اعلانات Piwigo الإخبارية';
 $lang['Purge search history'] = 'معالجة احصائيات البحث';
 $lang['Hide'] = 'أخفاء';
+$lang['Menu Management'] = 'القائمة الرئيسية';
 ?>