- renames `refSource`, `refMedium` and `refUrl` to `referrerSource`, `referrerMedium` and `referrerUrl` respectively for consistent naming across files and usages
fixes https://github.com/TryGhost/Team/issues/1821
This change moves all the event storage logic to one new place: the event storage class in the MembersEventsService, which is initialised in a new members events service wrapper.
Apart from this, this includes some improvements:
- Removed DomainEvents from the constructor arguments to the subscribe method (to make it more clear where to subscribe to and decrease dependencies)
- LastSeenAtUpdater doesn't subscribe in the constructor any longer (removes unclear side effect)
- Moved LastSeenAtUpdater initialisation to new members events service wrapper
- Added missing tests to LastSeenAtUpdater to assure that the MembersEventsService package has 100% coverage.