--MBTA General Manager Dan Grabauskas has received plenty of angry e-mails in his time, and should be able to take some serious heat. But he is furious about an e-mail from a Department of Corrections employee that got way too personal. Grabauskas is gay, and the e-mailer used anti-gay slurs about Grabauskas when describing MBTA service. Now Grabauskas is upset with Deval Patrick and his administration for not doing something about it sooner. The......