[FEAT] Cosmetic changes: Add option to ignore exceptions
[FEAT] Cosmetic changes: Add option to ignore exceptions

This feature allows to ignore exceptions and continue changing the
current page or skipping it. Part of it (when ignoring a page) might
be applicable to the bot class overall.

Change-Id: I81094d94c32d012aba481a23eba8fe4db3dc5a17

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