Show dummy TODO data in view of Todos

A few tweaks were needed to actually render the ToDo data in the view.

 * 'todo_stores' was missing the 'module.exports' statement
 * There was no dummy data in the 'todos' object on load
 * The 'todo_app' view was trying to iterate over an array, but the todo
data was passed in as an object.

Next steps:
 * Make some mock version of loading the data from a webserver, using
localstorage instead.
 * Make a chart of how this all works.