By Tom Gott Barcelona limped to an underwhelming 1-0 victory over Mallorca on Friday evening, with young Lamine Yamal to thank once again. The teenager’s glorious strike midway through the second half was a much-needed moment of magic for Barcelona, who dominated possession and had plenty of shots on goal without ever really showing any quality up until that moment. Ilkay Gundogan missed a first-half penalty for Barcelona but the sensational Blaugrana fans will be delighted to escape with three points ahead of Tuesday’s season-defining Champions League clash with Napoli. How the game unfoldedP…