refactor(render): remove recursion from renderer

The goal is to make implementing a renderer straight forward.

BREAKING_CHANGE:

- Renderer interface was redone / simplified.
- `DirectDomRenderer` was replaced by `DomRenderer`.
- `DirectDomRenderer.setImperativeComponentRootNodes` is replaced
  by the following 2 steps:
    1. `ViewManager.getComponentView(elementRef) -> ViewRef`
    2. `DomRenderer.setComponentViewRootNodes(viewRef, rootNodes)`
- all `@View` annotations need to have a template, but the template
  may be empty. Previously views that had a `renderer` property did
  not have to have a `template`.
- `dynamicComponentLoader.loadIntoNewLocation` does no more allow
  to pass an element, but requires a css selector.
  Special syntax: `:document` can be used as prefix to search globally
  on the document instead of in the provided parent view.

Part of #1675

modules/benchmarks/src/tree/tree_benchmark.js

@@ -16,13 +16,11 @@ import {getIntParameter, getStringParameter, bindAction} from 'angular2/src/test
 import {If} from 'angular2/directives';
 import {BrowserDomAdapter} from 'angular2/src/dom/browser_adapter';
 import {APP_VIEW_POOL_CAPACITY} from 'angular2/src/core/compiler/view_pool';
-import * as rvf from 'angular2/src/render/dom/view/view_factory';
 import {bind} from 'angular2/di';
 
 function createBindings():List {
   var viewCacheCapacity = getStringParameter('viewcache') == 'true' ? 10000 : 1;
   return [
-    bind(rvf.VIEW_POOL_CAPACITY).toValue(viewCacheCapacity),
     bind(APP_VIEW_POOL_CAPACITY).toValue(viewCacheCapacity)
   ];
 }