Jshint cleanup

- Bump the JSHint depenency to the latest
- Extract JSHint settings files to the dot file versions
- Moved the "CSSLint" global to the JSHint settings file and remove the redundant inline directives

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Sorry, @XhmikosR I think I created some overlap with #431 because the EditorConfig plugin does some similar cleanup when I was saving the changes to the `/*globals` directives.