move dashboard api into dashboard module

lib/modules/webserver/index.js

@@ -7,6 +7,7 @@ class WebServer {
     this.embark = embark;
     this.logger = embark.logger;
     this.events = embark.events;
+    this.plugins = embark.plugins;
     this.webServerConfig = embark.config.webServerConfig;
     if (!this.webServerConfig.enabled) {
       return;

test_apps/contracts_app/contracts/another_storage.sol

@@ -1,6 +1,5 @@
 pragma solidity ^0.4.17;
 contract AnotherStorage {
-
   address public simpleStorageAddress;
   address simpleStorageAddress2;