category.py: Replaced catlib except in move bot.
category.py: Replaced catlib except in move bot.

Removed catlib with other functions.
Used easier syntax without Link class to create
Category objects.

Change-Id: I5360fd4bebeb2d736fb5b86fc6d71a921acbebfb

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