Pizza. The word alone can kick-start the salivary glands of most Americans, and we might remind you that vegans and vegetarians have pizza-craving taste buds too. Going veg doesn't mean that you have to give up the delicious foods you grew up with: enter T.J. Scallywaggle's Vegan House of Pizza in Allston. Touting itself as "comfort food for enlightened times," TJ's is a mainstay in the Boston veg community and the only completely vegan......