refs: https://github.com/TryGhost/Team/issues/1446 - changed Emails API tests to use the new e2e test framework - Added missing tests for browse and retry endpoints
refs https://github.com/TryGhost/Toolbox/issues/135 - Going though local utils allows to have the "withFrontend: false" flag applied only to the e2e-api test suites. This way we can gradually introduce the no-frontend change across all test suites
- These are end-to-end tests, make it clearer what they are and what they are supposed to do
