bump grunt-saucelabs to v5.1.1
bump patch versions of 3 grunt tasks
Sauce tests: update iOS to v7.1
add document ready jQuery wrapper in Android Browser workaround
Merge pull request #13239 from twbs/doc-load-in-example

add document ready jQuery wrapper in Android Browser workaround
Tweak JS style and the relevant JSHint and JSCS checks.
Comply to the new style.
Remove `laxbreak`.
Remove `boss`.
Enable `requireCurlyBraces`.
Enable `es3`.
Switch to using plain `if/else` statements when there's no assignment.

The minizer outputs the same code anyway, and this has better readability.
Minor whitespace changes.
Switch to `(function){..})()`.
More updates to the JSHint options.
Run `grunt`.