Associated Press: Icebreakers sit idle in ports. Insects crawl out of forest hideouts. Daffodils sprout up from green lawns. Winter ended before it started in Europe’s north, where record-high temperatures have people wondering whether it’s a fluke or an ominous sign of a warming world. "It’s the warmest winter ever" recorded, said John Ekwall of the Swedish Meteorological and Hydrological Institute. In December, January and February, the average temperature in Stockholm was 36 …