(bug 62126) Retry creating a new page at wikidata.
(bug 62126) Retry creating a new page at wikidata.

Bug 46535 reports that bot fails while creating a page with
error "Could not create a new page. It already exists." But
the page does not exist.

This is a temporary patch to solve this problem above until
46535 has been fixed. It tries again until the page has been
created or maxretries exceeded.

There is a remaining problem with this bug/patch. There is no way
to check whether the page does really exist or the API gives
a wrong message.

Change-Id: I30d596d814caf3bf812b38b975019aef5213c787
hasteur/g13bot_tools_new,npdoty/pywikibot,TridevGuha/pywikibot-core,VcamX/pywikibot-core,happy5214/pywikibot-core,icyflame/batman,trishnaguha/pywikibot-core,magul/pywikibot-core,npdoty/pywikibot,smalyshev/pywikibot-core,wikimedia/pywikibot-core,h4ck3rm1k3/pywikibot-core,Darkdadaah/pywikibot-core,valhallasw/pywikibot-core,PersianWikipedia/pywikibot-core,jayvdb/pywikibot-core,magul/pywikibot-core,wikimedia/pywikibot-core,Darkdadaah/pywikibot-core,jayvdb/pywikibot-core,hasteur/g13bot_tools_new,xZise/pywikibot-core,hasteur/g13bot_tools_new,darthbhyrava/pywikibot-local,h4ck3rm1k3/pywikibot-core,emijrp/pywikibot-core,happy5214/pywikibot-core