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/features/clock/test/services/TimerServiceSpec.js

@@ -69,7 +69,7 @@ define([
                     '*',
                     jasmine.any(Function)
                 );
-                mockmct.objects.observe.mostRecentCall.args[2](newTimer);
+                mockmct.objects.observe.calls.mostRecent().args[2](newTimer);
                 expect(timerService.getTimer()).toBe(newTimer);
             });
         });