Improve <meta> tags
Merge pull request #12292 from ZDroid/meta

Improve <meta> tags
Make head elements order uniform across templates and examples
Additional changes to #12275 and #12292
Merge pull request #12297 from Quy/master

Additional changes to #12275 and #12292
More "LESS" to "Less" changes
Merge pull request #12302 from Quy/master

More "LESS" to "Less" changes
Improve grunt config and vars
s3_cache.py: fix name in USAGE message
grunt build-customizer-vars-form
Merge pull request #12295 from ZDroid/types

Improve grunt config and vars
document S3 cache more fully; fixes #12289
Replace page.base_url with relative url
Merge pull request #12304 from Quy/master

Replace page.base_url with relative url
grunt build-raw-files dist
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
Merge pull request #12306 from twbs/raw-files.min.js

rename raw-files.js to raw-files.min.js
docs: use relative URLs instead of site.baseurl
Update grunt-contrib-uglify dependency.
Corrected tag for Alert JS animation example from <a> to <button>

Also removed href attribute and added type="button"