Remove deprecated code and concepts from Backbone.Marionette example

🚀 run jscs over tests

ref:
https://github.com/tastejs/todomvc/commit/07353bcd844b41a2bf214d9c42845b65157a8bf7#commitcomment-13197635
https://github.com/tastejs/todomvc/commit/abee8bdedb4913a6f70b4ad5167fad16ad333def

Ref 07353bcd

This one is exactly the same as the one in the root directory so there's
no reason for it to be in the riot example folder too.

fix homepage link for riotjs.com

- Removed modules, replacing them with a common global namespace
- Added Backbone.Radio as a new dependency
- Removed usage of Wreqr, replacing it with Radio
- Renamed TodoList.js to Router.js to more accurately reflect its
  function
- Moved all application initialization into TodoMVC.Application
- Moved FilterState code into its own file
- Removed inline script in index.html and moved inititialization code
  into TodoMVC.js

update (Atma.js) rewrite the app

Add riot.js 2.0 example

DUEL: App Update (#1110), cancel editing on escape keypress (#789), and routing support (#812)

Update AngularJS case studies links

Replace deprecated Controller

Remove cloud9 and Codio links in the readme

Fix #1428
Fix #957

Also updates TodoMVC style/structure to latest.

Changing redraw strategy while handling input events

The app has been down for multiple years, was left unmaintained for
really long and is outdated in many ways. Thus, we're (temporarily)
removing it. If somebody comes in, volunteers to fix the problems and we
find a place to host it.

We already decided earlier to drop it from the homepage.
Ref 7f59ef71

Fixes gh-546
Fixes gh-593

Update readme to include a note about unminified libs

Fix #378

Some CSS in todomvc-app-css has to be replicated in the example itself
as some selectors have to differ. This updates it to the last version.

Fix #1418

issues.

Fix style issues: missing spaces.

Fix avoid double deletion when handling empty input and the following blur event.

Update backbone to 2.0