By Julia Burke, Beer Editor To the delight of a very thirsty crowd of Buffalo beer lovers, Blue Monk finally opened its doors this week after months of agonizing delays. The newly renovated bar on Elmwood Avenue was bursting with patrons almost immediately when it opened on Saturday evening, and as the joyful assembly of Belgian beer lovers took in the warm, friendly vibe of the city’s newest gastropub, one drinker said it well. “This is a great night for Buffalo.” After months of crossing fingers while Blue  Monk dealt with liquor license frustrations and massive renovations, the successful opening…