[IMPROV] nowcommons: Query at most one users
[IMPROV] nowcommons: Query at most one users

To verify if a page is used it's only necessary to query one using page instead
of all.

Change-Id: I9bbb206ede1723c33410c3b50e05dae71ecc265f

wikimedia/pywikibot-core,wikimedia/pywikibot-core,magul/pywikibot-core,darthbhyrava/pywikibot-local,h4ck3rm1k3/pywikibot-core,happy5214/pywikibot-core,jayvdb/pywikibot-core,magul/pywikibot-core,h4ck3rm1k3/pywikibot-core,hasteur/g13bot_tools_new,Darkdadaah/pywikibot-core,hasteur/g13bot_tools_new,PersianWikipedia/pywikibot-core,npdoty/pywikibot,hasteur/g13bot_tools_new,Darkdadaah/pywikibot-core,smalyshev/pywikibot-core,happy5214/pywikibot-core,jayvdb/pywikibot-core,npdoty/pywikibot