feat(core): provide support for relative assets for components

Assets defined for `templateUrl` and `styleUrls` can now be loaded
in relative to where the component file is placed so long as the
`moduleId` is set within the component annotation.

Closes #5634

Closes #5634

modules/angular2/src/compiler/compiler.ts

@@ -24,7 +24,7 @@ import {Compiler} from 'angular2/src/core/linker/compiler';
 import {RuntimeCompiler} from 'angular2/src/compiler/runtime_compiler';
 import {ElementSchemaRegistry} from 'angular2/src/compiler/schema/element_schema_registry';
 import {DomElementSchemaRegistry} from 'angular2/src/compiler/schema/dom_element_schema_registry';
-import {UrlResolver} from 'angular2/src/compiler/url_resolver';
+import {UrlResolver, DEFAULT_PACKAGE_URL_PROVIDER} from 'angular2/src/compiler/url_resolver';
 import {AppRootUrl} from 'angular2/src/compiler/app_root_url';
 import {AnchorBasedAppRootUrl} from 'angular2/src/compiler/anchor_based_app_root_url';
 import {Parser, Lexer} from 'angular2/src/core/change_detection/change_detection';
@@ -40,6 +40,7 @@ export const COMPILER_PROVIDERS: Array<Type | Provider | any[]> = CONST_EXPR([
   TemplateParser,
   TemplateNormalizer,
   RuntimeMetadataResolver,
+  DEFAULT_PACKAGE_URL_PROVIDER,
   StyleCompiler,
   CommandCompiler,
   ChangeDetectionCompiler,