diff --git a/.eslintignore b/.eslintignore
index 0de6d839dc2ba..91d7e7b48c508 100644
--- a/.eslintignore
+++ b/.eslintignore
@@ -1,4 +1,4 @@
 
 test/fixtures/scenarios
-optimize
+/optimize
 test/fixtures/scenarios
diff --git a/.eslintrc b/.eslintrc
index 7a623df06a6ca..1904222b3cfa9 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -1,2 +1,8 @@
 ---
 extends: '@elastic/kibana'
+rules:
+  no-unused-vars: off
+  no-var: off
+  prefer-const: off
+  no-extra-semi: off
+  quotes: off
diff --git a/config/kibana.yml b/config/kibana.yml
index 7358fd5b06a36..6535dcbee6a6a 100644
--- a/config/kibana.yml
+++ b/config/kibana.yml
@@ -1,8 +1,10 @@
 # Kibana is served by a back end server. This setting specifies the port to use.
 # server.port: 5601
 
-# This setting specifies the IP address of the back end server.
-# server.host: "0.0.0.0"
+# Specifies the address to which the Kibana server will bind. IP addresses and host names are both valid values.
+# The default is 'localhost', which usually means remote machines will not be able to connect.
+# To allow connections from remote users, set this parameter to a non-loopback address.
+# server.host: "localhost"
 
 # Enables you to specify a path to mount Kibana at if you are running behind a proxy. This setting
 # cannot end in a slash.
diff --git a/docs/kibana-yml.asciidoc b/docs/kibana-yml.asciidoc
index 0a4e2a20d5a9a..2a5e7fc86dde2 100644
--- a/docs/kibana-yml.asciidoc
+++ b/docs/kibana-yml.asciidoc
@@ -1,7 +1,7 @@
 .Kibana Configuration Settings
 [horizontal]
 `server.port:`:: *Default: 5601* Kibana is served by a back end server. This setting specifies the port to use.
-`server.host:`:: *Default: "0.0.0.0"* This setting specifies the IP address of the back end server.
+`server.host:`:: *Default: "localhost"* This setting specifies the host of the back end server.
 `server.basePath:`:: Enables you to specify a path to mount Kibana at if you are running behind a proxy. This setting
 cannot end in a slash (`/`).
 `server.maxPayloadBytes:`:: *Default: 1048576* The maximum payload size in bytes for incoming server requests.
diff --git a/docs/settings.asciidoc b/docs/settings.asciidoc
index 51ae6716105b0..8b9ee99997458 100644
--- a/docs/settings.asciidoc
+++ b/docs/settings.asciidoc
@@ -295,7 +295,7 @@ deprecated[4.2, The names of several Kibana server properties changed in the 4.2
 +
 *alias*: `host` deprecated[4.2]
 +
-*default*: `"0.0.0.0"`
+*default*: `"localhost"`
 
 `elasticsearch.url` added[4.2]:: The Elasticsearch instance where the indices you want to query reside.
 +
diff --git a/package.json b/package.json
index 683d4fed98ec9..2449a1f49b8a7 100644
--- a/package.json
+++ b/package.json
@@ -154,16 +154,16 @@
     "wreck": "6.2.0"
   },
   "devDependencies": {
-    "@elastic/eslint-config-kibana": "0.0.3",
+    "@elastic/eslint-config-kibana": "0.2.0",
     "Nonsense": "0.1.2",
     "angular-mocks": "1.4.7",
     "auto-release-sinon": "1.0.3",
-    "babel-eslint": "4.1.8",
+    "babel-eslint": "6.1.2",
     "chokidar": "1.6.0",
     "chromedriver": "2.22.1",
     "elasticdump": "2.1.1",
-    "eslint": "1.10.3",
-    "eslint-plugin-mocha": "1.1.0",
+    "eslint": "3.3.1",
+    "eslint-plugin-mocha": "4.4.0",
     "event-stream": "3.3.2",
     "expect.js": "0.3.1",
     "faker": "1.1.0",
@@ -177,7 +177,7 @@
     "grunt-karma": "2.0.0",
     "grunt-run": "0.6.0",
     "grunt-simple-mocha": "0.4.0",
-    "gruntify-eslint": "1.0.1",
+    "gruntify-eslint": "3.0.0",
     "handlebars": "4.0.5",
     "husky": "0.8.1",
     "image-diff": "1.6.0",
diff --git a/src/cli/cluster/__tests__/_mock_cluster_fork.js b/src/cli/cluster/__tests__/_mock_cluster_fork.js
index 2671ca08bdb9a..0915d172a4cd6 100644
--- a/src/cli/cluster/__tests__/_mock_cluster_fork.js
+++ b/src/cli/cluster/__tests__/_mock_cluster_fork.js
@@ -24,7 +24,7 @@ export default class MockClusterFork extends EventEmitter {
             dead = true;
             this.emit('exit');
             cluster.emit('exit', this, this.exitCode || 0);
-          }());
+          })();
         }),
       },
       isDead: sinon.spy(() => dead),
@@ -39,6 +39,6 @@ export default class MockClusterFork extends EventEmitter {
       await wait();
       dead = false;
       this.emit('online');
-    }());
+    })();
   }
 }
diff --git a/src/cli/cluster/cluster_manager.js b/src/cli/cluster/cluster_manager.js
index 685c64db1246f..2e98b3bcbcfe7 100644
--- a/src/cli/cluster/cluster_manager.js
+++ b/src/cli/cluster/cluster_manager.js
@@ -85,19 +85,16 @@ module.exports = class ClusterManager {
     const chokidar = require('chokidar');
     const fromRoot = require('../../utils/from_root');
 
-    const watchPaths = uniq(
-      [
-        fromRoot('src/core_plugins'),
-        fromRoot('src/server'),
-        fromRoot('src/ui'),
-        fromRoot('src/utils'),
-        fromRoot('config'),
-        ...extraPaths
-      ]
-      .map(path => resolve(path))
-    );
-
-    this.watcher = chokidar.watch(watchPaths, {
+    const watchPaths = [
+      fromRoot('src/core_plugins'),
+      fromRoot('src/server'),
+      fromRoot('src/ui'),
+      fromRoot('src/utils'),
+      fromRoot('config'),
+      ...extraPaths
+    ].map(path => resolve(path));
+
+    this.watcher = chokidar.watch(uniq(watchPaths), {
       cwd: fromRoot('.'),
       ignored: /[\\\/](\..*|node_modules|bower_components|public|__tests__)[\\\/]/
     });
diff --git a/src/core_plugins/console/.eslintrc b/src/core_plugins/console/.eslintrc
index c5fcfc4ff6fda..f539f6cd5878f 100644
--- a/src/core_plugins/console/.eslintrc
+++ b/src/core_plugins/console/.eslintrc
@@ -1,34 +1,36 @@
 ---
 
 root: true
-extends: '@elastic/kibana'
+extends: '../../../.eslintrc'
 
 rules:
-  block-scoped-var: [0]
-  camelcase: [0]
-  curly: [0]
-  dot-location: [0]
-  dot-notation: [0]
-  eqeqeq: [0]
-  guard-for-in: [0]
-  indent: [0]
-  max-len: [0]
-  new-cap: [0]
-  no-caller: [0]
-  no-empty: [0]
-  no-extend-native: [0]
-  no-loop-func: [0]
-  no-multi-str: [0]
-  no-nested-ternary: [0]
-  no-proto: [0]
-  no-sequences: [0]
-  no-undef: [0]
-  no-use-before-define: [0]
-  one-var: [0]
-  quotes: [0]
-  space-before-blocks: [0]
-  space-in-parens: [0]
-  space-infix-ops: [0]
-  semi: [0]
-  strict: [0]
-  wrap-iife: [0]
+  block-scoped-var: off
+  camelcase: off
+  curly: off
+  dot-location: off
+  dot-notation: off
+  eqeqeq: off
+  guard-for-in: off
+  indent: off
+  max-len: off
+  new-cap: off
+  no-caller: off
+  no-empty: off
+  no-extend-native: off
+  no-loop-func: off
+  no-multi-str: off
+  no-nested-ternary: off
+  no-proto: off
+  no-sequences: off
+  no-undef: off
+  no-use-before-define: off
+  one-var: off
+  quotes: off
+  space-before-blocks: off
+  space-in-parens: off
+  space-infix-ops: off
+  semi: off
+  strict: off
+  wrap-iife: off
+  no-var: off
+  prefer-const: off
diff --git a/src/server/config/__tests__/config.js b/src/server/config/__tests__/config.js
index cf43ce256f585..0dc60f98f6004 100644
--- a/src/server/config/__tests__/config.js
+++ b/src/server/config/__tests__/config.js
@@ -54,7 +54,7 @@ describe('lib/config/config', function () {
       it('should allow keys in the schema', function () {
         let config = new Config(schema);
         let run = function () {
-          config.set('test.client.host', 'http://0.0.0.0');
+          config.set('test.client.host', 'http://localhost');
         };
         expect(run).to.not.throwException();
       });
diff --git a/src/server/config/schema.js b/src/server/config/schema.js
index cf6790b82ea46..074ccec05b579 100644
--- a/src/server/config/schema.js
+++ b/src/server/config/schema.js
@@ -34,7 +34,7 @@ module.exports = () => Joi.object({
 
   server: Joi.object({
     name: Joi.string().default(os.hostname()),
-    host: Joi.string().hostname().default('0.0.0.0'),
+    host: Joi.string().hostname().default('localhost'),
     port: Joi.number().default(5601),
     maxPayloadBytes: Joi.number().default(1048576),
     autoListen: Joi.boolean().default(true),
diff --git a/src/ui/public/kbn_top_nav/__tests__/kbn_top_nav_controller.js b/src/ui/public/kbn_top_nav/__tests__/kbn_top_nav_controller.js
index f72f13f2cf083..36614f1e9b7e9 100644
--- a/src/ui/public/kbn_top_nav/__tests__/kbn_top_nav_controller.js
+++ b/src/ui/public/kbn_top_nav/__tests__/kbn_top_nav_controller.js
@@ -64,16 +64,19 @@ describe('KbnTopNavController', function () {
     });
 
     describe('hideButton:', function () {
-      it('defaults to false', function () {
+      it('defaults to a function that returns false', function () {
         const controller = new KbnTopNavController([
           { key: 'foo' },
           { key: '1234' },
         ]);
 
-        expect(pluck(controller.opts, 'hideButton')).to.eql([false, false]);
+        pluck(controller.opts, 'hideButton').forEach(prop => {
+          expect(prop).to.be.a(Function);
+          expect(prop()).to.eql(false);
+        });
       });
 
-      it('excludes opts from opts when true', function () {
+      it('excludes opts from opts when set to true', function () {
         const controller = new KbnTopNavController([
           { key: 'foo' },
           { key: '1234', hideButton: true },
@@ -81,27 +84,42 @@ describe('KbnTopNavController', function () {
 
         expect(controller.menuItems).to.have.length(1);
       });
+
+      it('excludes opts from opts when set to a function that returns true', function () {
+        const controller = new KbnTopNavController([
+          { key: 'foo' },
+          { key: '1234', hideButton: () => true },
+        ]);
+
+        expect(controller.menuItems).to.have.length(1);
+      });
     });
 
     describe('disableButton:', function () {
-      it('defaults to false', function () {
+      it('defaults to a function that returns false', function () {
         const controller = new KbnTopNavController([
           { key: 'foo' },
           { key: '1234' },
         ]);
 
-        expect(pluck(controller.opts, 'disableButton')).to.eql([false, false]);
+        pluck(controller.opts, 'disableButton').forEach(prop => {
+          expect(prop).to.be.a(Function);
+          expect(prop()).to.eql(false);
+        });
       });
     });
 
     describe('tooltip:', function () {
-      it('defaults to empty string', function () {
+      it('defaults to a function that returns undefined', function () {
         const controller = new KbnTopNavController([
           { key: 'foo' },
           { key: '1234' },
         ]);
 
-        expect(pluck(controller.opts, 'tooltip')).to.eql(['', '']);
+        pluck(controller.opts, 'tooltip').forEach(prop => {
+          expect(prop).to.be.a(Function);
+          expect(prop()).to.eql(undefined);
+        });
       });
     });
 
diff --git a/src/ui/public/kbn_top_nav/kbn_top_nav.html b/src/ui/public/kbn_top_nav/kbn_top_nav.html
index 0414340e2c2ac..5a26efde52b3f 100644
--- a/src/ui/public/kbn_top_nav/kbn_top_nav.html
+++ b/src/ui/public/kbn_top_nav/kbn_top_nav.html
@@ -6,10 +6,10 @@
       aria-label="{{::menuItem.description}}"
       aria-haspopup="{{!menuItem.hasFunction}}"
       aria-expanded="{{kbnTopNav.isCurrent(menuItem.key)}}"
-      ng-class="{active: kbnTopNav.isCurrent(menuItem.key), 'is-kbn-top-nav-button-disabled': menuItem.disableButton}"
-      ng-click="menuItem.run(menuItem, kbnTopNav)"
+      ng-class="{active: kbnTopNav.isCurrent(menuItem.key), 'is-kbn-top-nav-button-disabled': menuItem.disableButton()}"
+      ng-click="kbnTopNav.handleClick(menuItem)"
       ng-bind="menuItem.label"
-      tooltip="{{menuItem.tooltip}}"
+      tooltip="{{menuItem.tooltip()}}"
       tooltip-placement="bottom"
       tooltip-popup-delay="400"
       tooltip-append-to-body="1"
diff --git a/src/ui/public/kbn_top_nav/kbn_top_nav_controller.js b/src/ui/public/kbn_top_nav/kbn_top_nav_controller.js
index 9446639eaaea0..43eeaf13f4f5a 100644
--- a/src/ui/public/kbn_top_nav/kbn_top_nav_controller.js
+++ b/src/ui/public/kbn_top_nav/kbn_top_nav_controller.js
@@ -1,4 +1,4 @@
-import { capitalize, isArray, isFunction, result } from 'lodash';
+import { capitalize, isArray, isFunction } from 'lodash';
 
 import uiModules from 'ui/modules';
 import filterTemplate from 'ui/chrome/config/filter.html';
@@ -29,7 +29,7 @@ export default function ($compile) {
         const opt = this._applyOptDefault(rawOpt);
         if (!opt.key) throw new TypeError('KbnTopNav: menu items must have a key');
         this.opts.push(opt);
-        if (!opt.hideButton) this.menuItems.push(opt);
+        if (!opt.hideButton()) this.menuItems.push(opt);
         if (opt.template) this.templates[opt.key] = opt.template;
       });
     }
@@ -50,19 +50,24 @@ export default function ($compile) {
     open(key) { this.setCurrent(key); }
     close(key) { (!key || this.isCurrent(key)) && this.setCurrent(null); }
     toggle(key) { this.setCurrent(this.isCurrent(key) ? null : key); }
-
+    handleClick(menuItem) {
+      if (menuItem.disableButton()) {
+        return false;
+      }
+      menuItem.run(menuItem, this);
+    }
     // apply the defaults to individual options
     _applyOptDefault(opt = {}) {
       const defaultedOpt = Object.assign({
         label: capitalize(opt.key),
         hasFunction: !!opt.run,
         description: opt.run ? opt.key : `Toggle ${opt.key} view`,
-        run: (item) => !item.disableButton && this.toggle(item.key)
+        run: (item) => this.toggle(item.key)
       }, opt);
 
-      defaultedOpt.hideButton = result(opt, 'hideButton', false);
-      defaultedOpt.disableButton = result(opt, 'disableButton', false);
-      defaultedOpt.tooltip = result(opt, 'tooltip', '');
+      defaultedOpt.hideButton = isFunction(opt.hideButton) ? opt.hideButton : () => !!opt.hideButton;
+      defaultedOpt.disableButton = isFunction(opt.disableButton) ? opt.disableButton : () => !!opt.disableButton;
+      defaultedOpt.tooltip = isFunction(opt.tooltip) ? opt.tooltip : () => opt.tooltip;
 
       return defaultedOpt;
     }
diff --git a/src/ui/public/share/directives/share_object_url.js b/src/ui/public/share/directives/share_object_url.js
index d20a1c4c00305..f49c8dbcdf645 100644
--- a/src/ui/public/share/directives/share_object_url.js
+++ b/src/ui/public/share/directives/share_object_url.js
@@ -1,10 +1,10 @@
-const app = uiModules.get('kibana');
 import Clipboard from 'clipboard';
 import '../styles/index.less';
 import LibUrlShortenerProvider from '../lib/url_shortener';
 import uiModules from 'ui/modules';
 import shareObjectUrlTemplate from 'ui/share/views/share_object_url.html';
 
+const app = uiModules.get('kibana');
 
 app.directive('shareObjectUrl', function (Private, Notifier) {
   const urlShortener = Private(LibUrlShortenerProvider);
diff --git a/src/ui/ui_bundle_collection.js b/src/ui/ui_bundle_collection.js
index 3e652a176974c..a6b87779486b8 100644
--- a/src/ui/ui_bundle_collection.js
+++ b/src/ui/ui_bundle_collection.js
@@ -1,8 +1,3 @@
-const rimraf = promisify(require('rimraf'));
-const mkdirp = promisify(require('mkdirp'));
-const unlink = promisify(require('fs').unlink);
-const readdir = promisify(require('fs').readdir);
-
 import UiBundle from './ui_bundle';
 import appEntryTemplate from './app_entry_template';
 import { readFileSync as readSync } from 'fs';
@@ -11,6 +6,11 @@ import { join } from 'path';
 import { resolve, promisify } from 'bluebird';
 import { makeRe } from 'minimatch';
 
+const rimraf = promisify(require('rimraf'));
+const mkdirp = promisify(require('mkdirp'));
+const unlink = promisify(require('fs').unlink);
+const readdir = promisify(require('fs').readdir);
+
 class UiBundleCollection {
   constructor(bundlerEnv, filter) {
     this.each = [];