Merge branch 'feature/issue-118-add-a-new-dummy-config-resource' into feature/issue-123-add-apptester-setup-methods-for-the-sandbox-config
Remove AppTester.setup.config(fn), DummyConfigResource nullifies the need for it, since we now don't hold onto a temporary config object before giving it to DummyApi (people can just use AppTester.setup now and modify api.config directly)
Add AppTester.setup.config.app for setting up the app config, and change AppTester.setup.config to setup the sandbox config
Merge branch 'develop' into feature/issue-123-add-apptester-setup-methods-for-the-sandbox-config
Merge branch 'feature/issue-123-add-apptester-setup-methods-for-the-sandbox-config' into develop