Remove console "spam"

[vjeux]

My stance on logging is that if there isn't any error, you should have a clean one. Otherwise your console is being spammed by useless things you start ignoring it which is the worst :(

Would be nice to clean all the log statements there

[gaearon]

Yea, support for this was just merged 8 hours ago: webpack/webpack-dev-server#579. 😄
Waiting for a release.

[vjeux]

<3

[gaearon]

Killed half of it (WDS messages). HMR messages are still there but we'll disable them with a custom client I intend to implement as part of #89.