use the new version of 'archivebot-older-than'
use the new version of 'archivebot-older-than'

with the 'duration' parameter

per mailing list:
http://comments.gmane.org/gmane.comp.python.pywikipediabot.general/14160

corresponding change in the i18n file:
I507b0b38a87fe8e97b850a71d9c1764ec16fbeb1

Change-Id: Ie4699550def701a728abaca3e62287e1c36ce3b0

npdoty/pywikibot,jayvdb/pywikibot-core,darthbhyrava/pywikibot-local,valhallasw/pywikibot-core,hasteur/g13bot_tools_new,npdoty/pywikibot,Darkdadaah/pywikibot-core,xZise/pywikibot-core,happy5214/pywikibot-core,trishnaguha/pywikibot-core,emijrp/pywikibot-core,VcamX/pywikibot-core,happy5214/pywikibot-core,magul/pywikibot-core,h4ck3rm1k3/pywikibot-core,magul/pywikibot-core,icyflame/batman,PersianWikipedia/pywikibot-core,jayvdb/pywikibot-core,TridevGuha/pywikibot-core,wikimedia/pywikibot-core,wikimedia/pywikibot-core,h4ck3rm1k3/pywikibot-core,hasteur/g13bot_tools_new,Darkdadaah/pywikibot-core,smalyshev/pywikibot-core,hasteur/g13bot_tools_new