refactor: make bindings/directives names consistent

BREAKING CHANGE

- `routerDirectives` => `ROUTER_DIRECTIVES`
- `routerInjectables` => `ROUTER_BINDINGS`
- `ELEMENT_PROBE_CONFIG` => `ELEMENT_PROBE_BINDINGS`

modules/angular2/debug.ts

@@ -1,2 +1,5 @@
 export * from './src/debug/debug_element';
-export {inspectNativeElement, ELEMENT_PROBE_CONFIG} from './src/debug/debug_element_view_listener';
+export {
+  inspectNativeElement,
+  ELEMENT_PROBE_BINDINGS
+} from './src/debug/debug_element_view_listener';