Update test specs to use Jasmine 3 (#2089)

* Updated Karma and Jasmine versions

* Added DOMObserver class. Supports promise-based testing of DOM changes

Update asynchronous test specs to use promises or done() instead of waitsFor/runs

* Modified ActionCapability to duplicate context object properties as own properties for better object equality comparisons

* Global find + replace to fix syntax issues

* Fixed various issues caused by non-deterministic runtime order of tests in Jasmine 3. Fixed issues caused by changes to determination of object equality

* Addressed review comments

* Resolved merge conflicts with master

* Fixed style errors

* Use spy.calls.count() instead of manually tracking

platform/identity/test/IdentityProviderSpec.js

@@ -28,16 +28,11 @@ define(
     function (IdentityProvider) {
 
         describe("IdentityProvider", function () {
-            var mockQ, mockCallback, provider;
-
-            function calledBack() {
-                return mockCallback.calls.length > 0;
-            }
+            var mockQ, provider;
 
             beforeEach(function () {
-                mockCallback = jasmine.createSpy('callback');
                 mockQ = jasmine.createSpyObj('$q', ['when']);
-                mockQ.when.andCallFake(function (v) {
+                mockQ.when.and.callFake(function (v) {
                     return Promise.resolve(v);
                 });
 
@@ -45,11 +40,8 @@ define(
             });
 
             it("provides an undefined user", function () {
-                provider.getUser().then(mockCallback);
-
-                waitsFor(calledBack);
-                runs(function () {
-                    expect(mockCallback).toHaveBeenCalledWith(undefined);
+                return provider.getUser().then(function (user) {
+                    expect(user).toBe(undefined);
                 });
             });