In 'student_review/list' page, if the topic_identifier is empty, ':' sign should not be displayed.
In 'student_review/list' page, if the topic_identifier is empty, ':' sign should not be displayed.

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