update navbar responsive break variable
update navbar responsive break variable

BS3 commit 2f70477

up2vs/todc-bootstrap,2947721120/googlebt4,mozillo/todc-bootstrap,todc/todc-bootstrap,aaroncnhk/todc-bootstrap,todc/todc-bootstrap,2947721120/todc-bootstrap,ztx1491/todc-bootstrap,todc/todc-bootstrap