- big update in thumbnail creation process : form is always shown with the

comprehensive list of pictures without thumbnails (no matter the
  directory) unless there are no thumbnail missing.

- thumbnail creation process : form parameters are saved between 2 thumbnail
  generations thanks to new process

- thumbnail creation process : can ask to create all missing thumbnails

- thumbnail creation process : default thumbnail width and height are
  configured in include/config.inc.php

- thumbnail creation process : errors due to no write access directories are
  catched


git-svn-id: http://piwigo.org/svn/trunk@695 68402e56-0260-453c-a942-63ccdbb3a9ee

template/default/default.css

@@ -18,8 +18,14 @@ input,select,textarea { color:#FFFFCC;} /* Forms font color */
 .commentDate { color:#999999;} /* Comments date */
 .throw { color:#FFFFCC;} /* First line of tables */
 .bouton, .errors { color:#FFFFFF;} /* Buttons & errors */
-.update_summary_new { color:#9cb4ce;} /* Update results (admin side only) */
-.update_summary_del { color:#ffe1e1;} /* Update results (admin side only) */
+
+/* Update results (admin side only) */
+.update_summary_new, .best_gen_time
+{ color:#9cb4ce;}
+
+/* Update results (admin side only) */
+.update_summary_del,.worst_gen_time
+{ color:#ffe1e1;}
 
 /* ANCHORS */