It really was a game of two halves for the Celtic fans as they watched Brendan Rodgers’ side break down a stubborn Dundee team tonight. Goals from Alistair Johnston and Arne Engels sealed the three points as Celtic beat Dundee to remain at the top of the league just behind Aberdeen who took care of Rangers at Pittodrie. In 45 frustrating first-half minutes, Celtic spurned chance after chance as Dundee somehow managed to hang on and go into the break level. However, Brendan Rodgers made three quick second-half changes as the strength of the Celtic bench eventually proved too much for Dundee as …