From Press of Atlantic City Guests at Borgata Hotel Casino & Spa can enjoy breakfast in bed — and betting in bed. In good news for bettors and couch potatoes alike, Atlantic City’s top-grossing casino has decided to continue testing on a new mobile gambling system that allows hotel guests to play slot machines and video poker games in the privacy of their rooms. Called “eCasino,” customers use the television sets in their rooms to place their bets and play the games. Borgata is the only Atlantic City casino to have in-room gambling. Introduced in February, the new system underwent…