Rename All link into Home in navigation
Add actual link to Popular in navigation
Update navigation styles

* Change .active class. Remove background-color and box-shadow.
  .active navigation element just has a black text color
Get rid of pages controller/views
Automaticaly add .active to navigation element
Update routes

* Change root path to recipes#index
* Add Clearance constraints
* Add recipes resource
Add recipes controller and model prototypes
Add recipe views
Change $text-color value
Add recipes styles