docs: branding fixes (#14132)

Angular 1.x -> AngularJS
Angular 1 -> AngularJS
Angular1 -> AngularJS
Angular 2+ -> Angular
Angular 2.0 -> Angular
Angular2 -> Angular

I have deliberately not touched any of the symbol names as that would cause big merge collisions with Tobias's work.

All the renames are in .md, .json, and inline comments and jsdocs.

PR Close #14132

modules/angular1_router/karma-router.conf.js

@@ -10,7 +10,7 @@
 
 var browserProvidersConf = require('../../browser-providers.conf.js');
 
-// This runs the tests for the router in Angular 1.x
+// This runs the tests for the router in AngularJS
 
 module.exports = function (config) {
   var options = {

modules/angular1_router/src/module_template.js

@@ -8,7 +8,7 @@
 
 angular.module('ngComponentRouter').
     value('$route', null). // can be overloaded with ngRouteShim
-    // Because Angular 1 has no notion of a root component, we use an object with unique identity
+    // Because AngularJS has no notion of a root component, we use an object with unique identity
     // to represent this. Can be overloaded with a component name
     value('$routerRootComponent', new Object()).
 

modules/angular1_router/src/ng_outlet.ts

@@ -266,7 +266,7 @@ function dashCase(str: string): string {
 }
 
 /*
- * A module for adding new a routing system Angular 1.
+ * A module for adding new a routing system AngularJS.
  */
 angular.module('ngComponentRouter', [])
     .directive('ngOutlet', ['$animate', '$q', '$rootRouter', ngOutletDirective])