* Added methods to access average ratings for products and stores
* Added assets to display "stars" ratings
* Fixed API client receiving floats instead of Decimals
* Added API methods to get lists of product / provider ratings
* Added view with all the ratings for a given store
* Added "stars" rating JS library with additional images
* Added view to add new product / provider ratings
* Added view to show a product's individual ratings
Merge branch 'feature/product_store_ratings' into develop