European markets ended in the red on Friday, after the fallout from a global IT outage sapped risk appetite.The FTSE 100 index ended down 49.17 points, 0.6%, at 8,155.72. The FTSE 250 ended down 166.48 points, or 0.8%, at 21,067.68, and the AIM All-Share fell 3.54 points, 0.5%, at 784.13.For the week, the FTSE 100 fell 1.2%, the FTSE 250 shed 0.6% and the AIM gave back 0.3%.The Cboe UK 100 ended d