Chore: Test coverage hunt (#36)

* chore: add brand mocking in gallery view

* feat: dev gallery app

* chore: link mock block ids to real block type api

* feat: image settings page features

* chore: more tests

* chore: keystore util and more testing

* chore: more tests

* chore: re-install lint plugin...

* chore: lint fixes

* chore: moar tests

* chore: remove brand from module.config and link gallery to edx.org brand

src/setupTest.js

@@ -69,6 +69,8 @@ jest.mock('@edx/paragon', () => jest.requireActual('testUtils').mockNestedCompon
     Footer: 'ModalDialog.Footer',
     Header: 'ModalDialog.Header',
     Title: 'ModalDialog.Title',
+    Body: 'ModalDialog.Body',
+    CloseButton: 'ModalDialog.CloseButton',
   },
   Form: {
     Checkbox: 'Form.Checkbox',