It was all nearly worth it, Dermot Keely said, to see Dick Advocaat’s head in his hands. They were different times – nearly three decades before Advocaat took tiny Curaçao to the World Cup, their matches shown on TVs where Keely, now 72, bartends in Lanzarote. Back in 1998, Keely’s Shelbourne had been drawn to play Rangers in the Uefa Cup on the same day that Saint Patrick’s Athletic met Celtic in a Champions League qualifier in Parkhead.  Advocaat had just become Rangers’ first foreign manager and would lead them to a domestic treble that season. It was also little…