Update browserstack-runner package

Reorder lead/nav of About docs page

add @navbar-collapse-max-height Less variable

reorder sections of About docs page

most folks are probably more interested in History and Team than Branding

Update index.html

This is very minor, but to help encourage best practises it'd be best to have the input type 'email' for this email input example instead of 'text'

Fix #12298

Template the customizer's nav sidebar too

The customizer is such a PITA.

Update grunt-contrib-uglify dependency.

clarify Grunt task licensing

for consistency with docs/examples/starter-template/index.html

document S3 cache more fully

docs: use relative URLs instead of site.baseurl

Also removed href attribute and added type="button"

rename raw-files.js to raw-files.min.js

it's not /technically/ minified, but close enough
it's autogenerated, not terribly human-readable, and not meant to be directly modified