added hound, automated code style reviewer. Modified Flashcard as a link to the root path in header
designed card UI in welcome page. Created scopes in card model
implemented card review functionality and messaging result
completed task4 functionalities
code style formatted
code style formatted
code style formatted
code style formatted
code style formatted
code style formatted
code style formatted
code style formatted
Update reviews_controller.rb
code style formatted
code style formatted
code refactoring
reimplemented next item functionality for cards
refactored code
refactored code
refactored code