Karma runner logs warning for public assets

[CrisGrec]

The karma.conf.js currently proxies requests as follows: '/app/': '/base/dist/app/'.

However if you put an asset such as an image in the public directory, the asset is placed into the root of the dist directory when built. The result is that karma will log a warning each time the asset is requested:

19 04 2016 23:34:57.334:WARN [web-server]: 404: /image.png

Not sure if it's a valid solution, but changing the proxy to '/': '/base/dist/' allows requests to app to behave as normal, while including requests to assets in the root of dist, eliminating the warnings.

[filipesilva]

I'll put up a PR with your fix. If it horribly breaks everything, our tests should be able to show since they run ng test a whole lotta times.

[filipesilva]

Seems fine really, it's in!

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