Test case for named route
Note that URL "/" is now by design point to previously "/static_pages/home"
All test case should fail now because named route is not implemented

Change-Id: I21e8ff9ab1d5d7002ad4055e1a2f236ebf3e1204
Create route for '/about' -> StaticPagesController#about, using the built-in 'match' method in route.rb
It also auto create 'named route' for use in controllers & views:
  about_path -> '/about'
  about_url -> 'http://localhost:3000/about'
Still 3 test cases fail because named route for root is not done

Change-Id: I9137ee0e023f04ddd882948b51920b33a8144df4
Add the route for root: '/' -> StaticPagesController#home
But test cases still fail because named route 'root_path' is not auto created

Change-Id: I6a9d928a4ab93681324f3af476a2ed30cd8aa997
Use built-in method 'root' to map '/' -> StaticPagesController#home
Now test all green

Change-Id: Iff2557ae085fd97591cddddb69089681287c6bc7
Now replace all placeholders (links) in views with named routes

Change-Id: I50bd3e1344d148fb10509a238e7ac1adacc5575c