Change to postgresql for database
Add Bootstrap for layout/style, add helper method for Bootstrap messages, update gems, install jquery-ui.
Add models and controllers for Projects and Todos.
Add views and implement a nested Todo form on the Project edit page. Initial functionality for the sortable todo list is based on a heavily tweaked version of http://tech.thereq.com/post/8193672425/draggable-sortable-editable-list-with-jquery-and