Use PostgreSQL instead of SQLite
Update Rack::Zip
Remove unneccessary require
Use RACK_ENV instead of PADRINO_ENV
Remove sqlite3 gem from dependencies
Install test tools
Fix typos
Add lib.task
Update gems
Add tasks lib:gem and lib:bower
Add Twitter bootstrap to dependencies
Remove path to components from Sprockets settings

It is served directly by reverse proxy server.
Redefine Padrino::Sprockets::Helpers::AssetTagHelpers#asset_folder_name

To serve assets under /stylesheets or /javascripts.
Move CSSs to css files
Add test mock of OmniAuth
Download ZIP file for Twitter bootstrap
Fix a typo
Remove wrapper tag for success/error messages

flash_tag generates div tags
Align navigation right
Extract delete button of books