refs https://github.com/TryGhost/Toolbox/issues/158
- Allows for much smaller amount of code to configure a test to work with chai-jest-snapshots. They now work automatically for all regression tests and could be enabled for other suites by adding the "--require=./test/utils/snapshots.js" parameter in respective test:* package script
- Regenerated snapshot for authentication test as the naming structure
changed a little with the snapshot metadata being taken on a higher
level in the test (uses the suite name instead of a specific describe it
used to be called from)