Move grid offsets to desktop only. restore proper table grid class behavior
Move grid offsets to desktop only. restore proper table grid class behavior

BS3 commits 573a19741770338b9e08838d908f51b7a82cddd3 and
b76d98eee3fa4a1a8d7fb281a31a7d20982459d3

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