[feature]add show my hidden_cards function
[chore]use albums/index page to display hidden_cards

Note: the action inside each item should be changed based on the
`action_name`: when visit `index`, the button should be `hide card`,
  when the action is `hidden_cards`, the button should be `view cards`
[chore]fix bug for profile page
[chore]add link to hidden_cards page
[feature]make a hidden card to be visible
[chore]different action for hide/view card
[chore]refactor hide_view_card
Merge pull request #19 from peterzd/hidden_cards

Hidden cards