fix(tsconfig): fix loading of typings

"main" typings were both excluded and partially included by filesGlob (read by awesome-typescript-loader). Instead "browser" typings are included, thus including typings type definitions like angular.

Author: Koslun

templates/app/tsconfig.client(ts).json

@@ -14,7 +14,7 @@
     ],
     "filesGlob": [
         "client/{app,components}/**/!(*.spec).ts",
-        "typings/main.d.ts"
+        "typings/browser.d.ts"
     ],
     "awesomeTypescriptLoaderOptions": {
       "resolveGlobs": true,