Update webpack and react-hot-loader to latest versions

[guifromrio]

Newest versions of both packages enables us to npm link React components and have hot reload work simultaneously in both child and parent!

I'll create a PR when I have some time.

Versions I tested with:

"webpack": "~1.8.4"
"react-hot-loader": "^1.2.5"

[weblogixx]

@firstdoit Webpack was updated to 1.10.x some time ago, the hot loader update will be in the next release (I dont think we need a patch right now because the new version does not differ that much from the currently used one).

Therefore, I will close this request (was lying around long enough I think ;)).