fix popover arrow by selecting the first element child
fix popover arrow by selecting the first element child

peterblazejewicz/bootstrap,coliff/bootstrap,inway/bootstrap,zalog/bootstrap,kvlsrg/bootstrap,kvlsrg/bootstrap,GerHobbelt/bootstrap,GerHobbelt/bootstrap,GerHobbelt/bootstrap,stanwmusic/bootstrap,peterblazejewicz/bootstrap,stanwmusic/bootstrap,twbs/bootstrap,tjkohli/bootstrap,inway/bootstrap,zalog/bootstrap,stanwmusic/bootstrap,zalog/bootstrap,inway/bootstrap,m5o/bootstrap,stanwmusic/bootstrap,kvlsrg/bootstrap,peterblazejewicz/bootstrap,twbs/bootstrap,tjkohli/bootstrap,m5o/bootstrap,coliff/bootstrap