Throttle rule for WikiCon

From ..... 2013-11-21T00:00 +0:00 
To ....... 2013-11-24T23:00 +0:00 
IP ....... 195.37.186.62
Wikis .... de.wikipedia,  en.wikipedia
           de.wikisource, en.wikisource
           commons.
Amount ... 60

Bug: 56930
Change-Id: Icede39e41ad2d49ed5a05959324eade8865023b5