Fix the homepage feature tests after the refactor
Merge pull request #294 from moneyadviceservice/fix_home_page_feature_tests

Fix the homepage feature tests after the refactor
Add jshint_ruby gem.

@jongilbraith
Very basic implementation of an asset pipeline JsHint processor.

Basic implementation nailed out while pairing with @pvcarrera.
Make jshint use the jshintrc.

Can also now use less convoluted sample code.
Remove test dependency on external jshintrc.
Simple rake task to run jshint on javascript assets.
Only lint js assets in app/assets.
Get rid of hacky stubbing of initialize.