add <table> case to responsive-visibility mixin; see 10056
add <table> case to responsive-visibility mixin; see 10056

BS3 commits: 303f8a33c354b5c8f6132574de55114b8f39a1f1

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