restart web3 service on proces launch

lib/contracts/provider.js

@@ -64,6 +64,10 @@ class Provider {
     });
   }
 
+  stop() {
+    this.engine.stop();
+  }
+
   eth_accounts(payload, cb) {
     return cb(null, this.addresses);
   }

lib/process/processLauncher.js

@@ -43,7 +43,6 @@ class ProcessLauncher {
     if (this.silent) {
       return;
     }
-    console.log('Not silent????', this.silent);
     if (this.logger[msg.type]) {
       return this.logger[msg.type](this.normalizeInput(msg.message));
     }