Added Recipe Model, updates to Food/Recipe Pages/Models

- application.css.scss changed for better food/recipe pages
- Food Controller updated for eventual “Add Food” option
- Same done for Recipe Controller
- User Controller added “food” def, for food page. Recipe doesn’t need
since recipes don’t have to be user only.
-  Recipe Model updates
-  small changed to show pages for food and recipe
- Food and Recipe Pages are not static_pages anymore, now under users.
- Routes.rb updated