Make PropertyPage.get() return a dictionary
Make PropertyPage.get() return a dictionary

This is consistent with the parent method and ItemPage.get() do.
This shouldn't be a breaking change, I believe.

Change-Id: Icf0bff007b6d44efe000cdab3a565f19d0bd4a2c

hasteur/g13bot_tools_new,Darkdadaah/pywikibot-core,PersianWikipedia/pywikibot-core,hasteur/g13bot_tools_new,happy5214/pywikibot-core,npdoty/pywikibot,Darkdadaah/pywikibot-core,hasteur/g13bot_tools_new,wikimedia/pywikibot-core,jayvdb/pywikibot-core,magul/pywikibot-core,happy5214/pywikibot-core,magul/pywikibot-core,npdoty/pywikibot,jayvdb/pywikibot-core,wikimedia/pywikibot-core