Noisy dots for fixing moved page redirects.

Otherwise you didn't see any action for a long period and cannot
check whether the bot works or e.g. hangs. Single dots are printed.
Because the print statement prints a space on the end (py 2.X), there
has to be a backspace char "\b" in front of the next dot.

(unlike compat where you see any retrieved page)

Change-Id: Id6ce19608e86b50d1720acb98d010c9b05dcb27e
Merge "Noisy dots for fixing moved page redirects."