add note to CONTRIBUTING.md about `outline: none`
Merge pull request #12521 from twbs/outline-none-note

add note to CONTRIBUTING.md about `outline: none`
disable OS X Chrome in Selenium tests to fix the build
Merge pull request #12574 from twbs/os-x-chrome-busted

disable OS X Chrome in Selenium tests to fix the build
Fixes #12470: Scope large modal styles to minimum viewport width
Merge branch 'master' of github.com:twbs/bootstrap
Reorder grunt dist tasks to ensure JS gets copied over