Redesigned moudule system

* Top level private APIs (e.g. jasmine.private.whatever) are no longer
  exposed
* jasmineRequire is no longer exposed
* core is self-booting
* Globals are automatically created in browsers. (They can subsequently
  be removed by user code if desired.)
* Globals are *not* automatically created in Node. An installGlobals
  function is exported instead. The jasmine package calls installGlobals
  unless configured not to do so.
* In Node, the same instance is returned each time jasmine-core is
  imported. A reset function is exported. It effectively resets all state
  by discarding the env and creating a new one. This allows mulitple
  sequential runs within the same process to be independent of each
  other, but does not allow multiple concurrent runs. (That probably never
  worked anyway.)

Fixes #2094

src/html/HtmlReporterV2Urls.js

@@ -1,4 +1,4 @@
-jasmineRequire.HtmlReporterV2Urls = function(j$) {
+getJasmineHtmlRequireObj().HtmlReporterV2Urls = function(j$, private$) {
   'use strict';
 
   // TODO unify with V2 UrlBuilder?
@@ -49,7 +49,7 @@ jasmineRequire.HtmlReporterV2Urls = function(j$) {
         config.seed = seed;
       }
 
-      const specFilter = new j$.private.HtmlSpecFilterV2({
+      const specFilter = new private$.HtmlSpecFilterV2({
         filterParams: () => ({
           path: this.queryString.getParam('path'),
           spec: this.queryString.getParam('spec')