Update print.less from source (html5-boilerplate). Simplyfy table style.
Make `popover-arrow-color` default to `popover-bg`
grunt
Merge pull request #14465 from kaime/master

Make `popover-arrow-color` default to `popover-bg`
Merge pull request #14452 from vsn4ik/update_print_less

Update print.less from source (html5-boilerplate).
grunt