Implement moveToApplicationsFolder (#10142)

* Implement moveToApplicationsFolder

* Fix tabs / spaces

* Fix linting

* Use Browser::Quit, instead of exit

* Update documentation as per feedback

* Fix spec

spec/api-app-spec.js

@@ -114,6 +114,14 @@ describe('app module', function () {
     })
   })
 
+  describe('app.isInApplicationsFolder()', function () {
+    it('should be false during tests', function () {
+      if (process.platform !== 'darwin') return
+
+      assert.equal(app.isInApplicationsFolder(), false)
+    })
+  })
+
   describe('app.exit(exitCode)', function () {
     var appProcess = null