Updated fee service and cleaned console log from header service

[tenthirtyone]

Fee service will defer to bitcore-node.json for its config. Define fee.rpc under servicesConfig

"servicesConfig": {
    "fee": {
      "rpc": {
        "user": "btcrpc",
        "pass": "dontusethisyouwillberobbed-maybe",
        "host": "localhost",
        "protocol": "http",
        "port": 8333
      }
    }
  }

syncPercentage is provided by another service and its implementation is gone so I've removed that from the fee service API.

Cleaned a console.log from the header service