Changed bootstrap layout from fruid to fixed.j
Added a link for Baskets at NaviBar.
Added dropdown list at each photo in index page.
Moved the password to environment variables.
Generated pickings controller.

- rails g controller pickings
Added a feature that makes a relation between photo and basket clicking one of the basket list.

- Added routes of picking.
Modified an error that occurred when Pincking model was created.
Made a permament link to root. But is it right way?
Showed Basket list at left side and enabled dragging a photo to a basket.
Added baskets' route and enabled baskets to show belonging photos.
Added a feature that can download photos in the basket, using rubyzip.
Merge pull request #1 from hachiilcane/basket-feature

Basket feature