use strong parameters in 'participant_controller'
use strong parameters in 'participant_controller'

akshayjain114/expertiza,mhhassan/expertiza,redsock88/expertiza,ApertureScienceInnovators/expertiza,akshayjain114/expertiza,KunmiaoYang/expertiza,joshio1/expertiza,rmmaily/expertiza,sid5788/expertiza,michaelamoran/expertiza,arpitashekhar/expertiza,redsock88/expertiza,kira0992/expertiza,michaelamoran/expertiza,redsock88/expertiza,expertiza/expertiza,arpitashekhar/expertiza,rmmaily/expertiza,arpitashekhar/expertiza,rmmaily/expertiza,kira0992/expertiza,joshio1/expertiza,expertiza/expertiza,urmilparikh95/expertiza,michaelamoran/expertiza,urmilparikh95/expertiza,expertiza/expertiza,akshayjain114/expertiza,expertiza/expertiza,ApertureScienceInnovators/expertiza,ApertureScienceInnovators/expertiza,mhhassan/expertiza,arpitashekhar/expertiza,KunmiaoYang/expertiza,KunmiaoYang/expertiza,joshio1/expertiza,kira0992/expertiza,kira0992/expertiza,urmilparikh95/expertiza,mhhassan/expertiza,sid5788/expertiza,akshayjain114/expertiza,sid5788/expertiza,michaelamoran/expertiza,KunmiaoYang/expertiza,mhhassan/expertiza,urmilparikh95/expertiza,sid5788/expertiza,redsock88/expertiza,joshio1/expertiza,ApertureScienceInnovators/expertiza,rmmaily/expertiza