Updated to Rails 4.1.4
Ratings and updates for current Rails and ActiveAdmin

- strong parameters
- buttons, default_actions now just actions
- fixed permit_params for pages
- ratings for stories
- mvoed SASS variables into separate stylesheet
- patch in active_admin initializer to make it play nciely with friendly_id
Ratings improvements

- modified rating colours
- moved rating dots to beside text
- page for info about ratings
Filters for stories page