switch browserName from "googlechrome" to "chrome" per @Jonahss in #12647
Merge pull request #12834 from twbs/sauce-chrome-name

switch browserName from "googlechrome" to "chrome"
fix #12836

Thanks @Quy.
move grid classes cascade explanation into main grid docs section
Merge pull request #12837 from twbs/grid-docs

move grid classes cascade explanation into main grid docs section
grunt dist
update GitHub issue link in comment
Run grunt dist.
grunt build-customizer-html
update boto & s3_cache.py
Remove bootstrap keyword
Merge pull request #12829 from ZDroid/no-bs-keyword

Remove bootstrap keyword from package.json
Update load-grunt-tasks.
Bump grunt-jscs-checker.
Run `grunt update-shrinkwrap`.