NATICK — Two men pleaded not guilty today in Framingham District Court after Natick Police said they started a fight during a child's birthday party at Chuck E. Cheese on Saturday. Donald Jean Estime, 32, of Brockton, and Ezekiel L. Tavares, 36, of East Boston, were both arrested Saturday at 5:19 p.m. and charged with assault and battery and disturbing the peace. According to a police report, the pair were at Estime's son's birthday party and appeared to have been drinking. Estime got into an argument with his son's mother's cousin because Estime was harassing that man's daughter who was...