Fixes to enable testing again (#3275)

* Updated library versions
* Use Karma alternative spec loading
* Fixed memory leak in URLTimeSettingsSynchronizer
* Introduce mock DataTransfer object to fix issue with firefox headless
* make resetApplicationState return a promise
* Remove BeforeAll
* Do not throw an error if root returns no children
* Adding missing parameters to ES tests
* Fixed TransactionService bug
* bump test coverage up to 64%

src/plugins/notificationIndicator/pluginSpec.js

@@ -35,10 +35,6 @@ describe('the plugin', () => {
         parentElement,
         mockMessages = ['error', 'test', 'notifications'];
 
-    beforeAll(() => {
-        resetApplicationState();
-    });
-
     beforeEach((done) => {
         openmct = createOpenMct();
 
@@ -61,7 +57,7 @@ describe('the plugin', () => {
     });
 
     afterEach(() => {
-        resetApplicationState(openmct);
+        return resetApplicationState(openmct);
     });
 
     describe('the indicator plugin element', () => {