TSLint → ESLint (#21006)

* Alphabetized tslint and tsconfig files

* Optimized tsconfig files

* Optimized editorconfig & prettier config files

… to reduce redundancy

* Switched to @grafana/tsconfig

… and:
* de-duped options
* removed options with default values

* Fixed nasty issue with types for nested slate-react

* Replaced TSLint with ESLint

* TSLint disables → ESLint disables

… also JSHint removals, which haven’t had an affect since it was replaced with TSLint.

* Compliances for ESLint, Prettier and TypeScript

* Updated lockfile

public/test/mocks/dashboard-mock.js

@@ -1,26 +1,25 @@
-define([],
-  function() {
+define([], function() {
   'use strict';
 
   return {
     create: function() {
       return {
-        title: "",
+        title: '',
         tags: [],
-        style: "dark",
+        style: 'dark',
         timezone: 'browser',
         editable: true,
         failover: false,
         panel_hints: true,
         rows: [],
-        pulldowns: [ { type: 'templating' },  { type: 'annotations' } ],
-        nav: [ { type: 'timepicker' } ],
-        time: {from: 'now-6h', to: 'now'},
+        pulldowns: [{ type: 'templating' }, { type: 'annotations' }],
+        nav: [{ type: 'timepicker' }],
+        time: { from: 'now-6h', to: 'now' },
         templating: {
-          list: []
+          list: [],
         },
         refresh: '10s',
       };
-    }
+    },
   };
 });