add .sr-only-focusable; fixes #12259
update docs to include+use .sr-only-focusable
fix #12959
S H R I N K W R A P
Merge pull request #12972 from twbs/cleaner-shrinkwrap

Exclude `resolved` from npm shrinkwrap to avoid irrelevant changes
Remove redundant parens
Update .hide-text() comment
Rename generateRawFilesJs to generateRawFiles
Remove redundant _config.yml quotes
Merge pull request #12980 from ZDroid/config-yml-quotes

Remove redundant _config.yml quotes
grunt
Fixes #12966: Ensure icon font vars are loaded into Customizer
Merge pull request #12976 from ZDroid/comment

Update .hide-text() comment
grunt
Fix comment
grunt dist
fix #9342
grunt
Merge pull request #12982 from twbs/fat-9342

fix #9342
fixes #9836