refactor(exception_handler): unified all exception handling

BREAKING CHANGE
    Previously it was possible to pass a custom error reporter to bootstrap, which was used only during the construction of Injector. This had limited utility, so this capability has been removed.

modules/angular2/src/core/application.dart

@@ -15,7 +15,7 @@ export 'application_common.dart' show ApplicationRef;
 ///
 /// See [commonBootstrap] for detailed documentation.
 Future<ApplicationRef> bootstrap(Type appComponentType,
-    [List componentInjectableBindings, Function errorReporter]) {
+    [List componentInjectableBindings]) {
   reflector.reflectionCapabilities = new ReflectionCapabilities();
-  return commonBootstrap(appComponentType, componentInjectableBindings, errorReporter);
+  return commonBootstrap(appComponentType, componentInjectableBindings);
 }