minor and important fix of webbrowser
minor and important fix of webbrowser

When system wants a cpatcha, you need to import webbrowser in order to be able to open it!

Change-Id: I875217b03d9a9dc47d4a5bdc20ea9f10cc26d223

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