Add event log to editor

Shows output from git pull/push and npm install in the editor

packages/node_modules/@node-red/runtime/lib/index.js

@@ -23,6 +23,7 @@ var storage = require("./storage");
 var library = require("./library");
 var events = require("./events");
 var settings = require("./settings");
+var exec = require("./exec");
 
 var express = require("express");
 var path = require('path');
@@ -71,6 +72,7 @@ function init(userSettings,_redUtil,_adminApi) {
     redNodes.init(runtime);
     library.init(runtime);
     externalAPI.init(runtime);
+    exec.init(runtime);
 }
 
 var version;
@@ -248,6 +250,7 @@ var runtime = {
     events: events,
     nodes: redNodes,
     library: library,
+    exec: exec,
     util: require("@node-red/util").util,
     get adminApi() { return adminApi },
     get nodeApp() { return nodeApp },