Update less.js to v1.6.3.
Update dependencies.
Merge pull request #12718 from twbs/dependencies

Update dependencies.
Merge pull request #12719 from twbs/update-less

Update less.js to v1.6.3.
Add build-raw-files log; fixes #12603

Fixes #12672
bump grunt-exec to v0.4.5 & add missing tilde to version spec
regenerate npm-shrinkwrap.canonical.json
Re-indent test files.
Fix customizer.js indentation warnings.
Document caveats of `pointer-events: none` usage in btn.disabled

Refs #10049
Source for compatibility info: http://caniuse.com/#feat=pointer-events
Remove `curly: false` from `.jshintrc`
Merge pull request #12513 from ZDroid/jshint

Remove `curly: false` from `.jshintrc`
Merge pull request #12720 from twbs/reident-test-files

Reindent test files
Safari rounding problem still present as of v7.0.1 for OS X
Merge pull request #12749 from twbs/pointer-events-note

Document caveats of `pointer-events: none` usage in btn.disabled
create failing tests
change trigger to triggerHandler as needed