Knockoutjs: New ui & upgrade to NPM

update marionette example to latest UI

added new Todo ui. upgraded to NPM. removed bower deps. updated bower references to node references. minor fix in the template due to visual error in the Clear completed button.

Close #1138

Upgrade app to use modules from npm and adjust to new Todo UI. Flight
and jasmine-flight are still on bower due to the fact that
jasmine-fligth does not exist as an npm module and FlightJS is a UMD
bundle at npm.

Move marionette out of compile-to-js section

Fixes #1137

Move marionette out of labs.

Migrate `yui` example to `todomvc-app-css`

Migrate `plastronjs` example to `todomvc-app-css`

Migrates React app to new UI

Migrate `enyo_backbone` example to `todomvc-app-css`

Fixes #1120 - Update of tpl.css to match current style

Migrate `angularjs-perf` example to `todomvc-app-css`

Migrate `extjs_deftjs` example to `todomvc-app-css`

Migrate `Aria templates` example to `todomvc-app-css`

Migrate `rAppid.js` example to `todomvc-app-css`