E2E test fixups (#2045)

* Reinstall reporter and re-enable skipped tests

* Fixups for Linux

* Mac fixes

* Windows fixes

* Use keyboard shortcuts instead of menu for most menu actions

* Couple fixes

* One more fix for now

* Windows fixes

* Lint fixes

* Change up developer tools tests to be more consistent

* Fix key for mac

* Couple fixes for flaky tests/to avoid crashes on unload

src/main/views/MattermostView.ts

@@ -105,6 +105,10 @@ export class MattermostView extends EventEmitter {
 
             // wait for screen to truly finish loading before sending the message down
             const timeout = setInterval(() => {
+                if (!this.view.webContents) {
+                    return;
+                }
+
                 if (!this.view.webContents.isLoading()) {
                     try {
                         this.view.webContents.send(SET_VIEW_OPTIONS, this.tab.name, this.tab.shouldNotify);