Echo breaks vue-resource get calls

[gilbitron]

I was upgrading an existing Spark install to use Laravel 5.3 and after installing Echo got the error:

next is not a function

So I upgraded vue-resource to 0.9.3 which got rid of the error. However, now any this.$http.get calls don't fire and no errors are thrown. It looks like any vue-resource version >= 0.8.0 has the same effect.

[gilbitron]

Looks like this was an issue with the way Spark was setting up Vue.http.interceptors.