Applied changes of "refactored architecture" 

The architecture of the angular seed project has been refactored. The karma.conf.js has been moved from the "test"-folder to the root folder and protractor.conf.js has moved to "e2e-tests". 
See https://github.com/angular/angular-seed/commit/0847b751c221516f04e1d02f38ae34c0e7873f4e)