By JON LINDLEY AGUSTIN, KATRIA AYANNA ALAMPAY, JHESSET THRINA ENANO, ELIZABETH ESCANO AND LUIS ADRIAN HIDALGO. (First of two parts) The roughly five-square-meter room at the Institute of Islamic Studies (IIS) in Romulo Hall at the University of Philippines-Diliman is just a storage area. But for two hours around noon every Friday, it transforms into