Be warned, Starbucks addicts and people who like free bathrooms: The coffee shop will be closed tonight between 5:30 and 9:00 for an emergency training of its employees, or "baristas," as they are known. In a city where the Starbucks vs. Dunkin' Donuts battle rages, Dunkin' Donuts is staking its claim by cutting prices on its small drinks to 99 cents until 10:00 pm, WBZ reports. Dunkin' Donuts is declaring coffee war, and it's......