page_tests.py: add tests for Page.botMayEdit()
page_tests.py: add tests for Page.botMayEdit()

Add tests for Page.botMayEdit(), according to {{[no]bots}} rules on:
- en wikipedia
- de wikipedia

Change-Id: I5d0c8d693218c3c44dea0adfc02447cc215a89bc

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