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/timeline/test/capabilities/TimelineTimespanSpec.js

@@ -36,7 +36,7 @@ define(
                     'timespan-' + end,
                     ['getEnd']
                 );
-                mockTimespan.getEnd.andReturn(end);
+                mockTimespan.getEnd.and.returnValue(end);
                 return mockTimespan;
             }
 
@@ -53,7 +53,7 @@ define(
                 mockMutation = jasmine.createSpyObj("mutation", ["mutate"]);
                 mockTimespans = [44000, 65000, 1100].map(makeMockTimespan);
 
-                mockMutation.mutate.andCallFake(function (mutator) {
+                mockMutation.mutate.and.callFake(function (mutator) {
                     mutator(mutationModel);
                 });