Add metod Edit for controllers Cards
Add method Edit
Change cards_controller.rb
Change index.html.erb
debug cards_controller.rb
debug cards_controller.rb. Second
debug edit.html.erb
change cards_controller.rb. Add Destroy
change index.html.erb. link & confirm Destroy
create metod New & new.html.erb
add metod show & show.html.erb
debug new.html.erb
add & debug validation form new & edit
fix bug edit & new Views
add gem simple_form
add simple_form for edit & new Views
destroy IF validates inside new & edit Views
DRY for cards_controller.rb
fix bugs cards_controller.eb