Reactjs: compare through object identity instead of id

Close #783

Fixing Optimized Angularjs's markAll method.

Angular-perf: Fixing conditional that causes the "Clear completed" button to be enabled at the wrong time.

Make React TodoMVC more MVC-ish

Fix parens to bind controller to receive callback correctly

Remove extra parens

Close GH-776: Make sure updateCount works with async Stores

Fix link to the spec

closes #741

Add an example app to the labs for AngularDart without routing.

AngularDart is heavily inspired by AngularJS and is supercharged for Dart. Core
Angular features such as directives, data binding, and dependency injection, are
all there, and they've taken advantage of Dart's features like metadata, types,
and classes to feel natural for Dart developers. AngularDart is also the first
version of Angular to be built on emerging web standards like Shadow DOM.

Fixes typo in firebase-angular

A capital "F" kept this TodoMVC example from working at all.

Fix #768

Also, remove a metric shitton of garbage.

Reduce complexity in backbone/app-view

Fixes #763

AngularJS: Utilize ngRoute for filters

AngularJS+Firebase: Upgrade to 1.2.6

AngularJS+Typescript: Upgrade to 1.2.6

KO+RJS: Upgrade to KnockoutJS 3.0

Also attempts to bring the markup closer to the architecture example for
KnockoutJS.