SOUTH AFRICAN teenager Sinenjongo Phuthumani had only discovered the joys of drinking in nightclubs with her friends after graduating from school last year. That new passion ended in horror when the 19-year-old watched friends and other partygoers collapse and die on the floor of an east coast tavern in a weekend tragedy that claimed 21 young lives and prompted nationwide grief. "I have taken a decision never to go clubbing again," said Phuthumani, as she joined other mourners for those who died at the Enyobeni tavern in Scenery Park, a township outside the city of East London. "I'm still traumatised.…