Description:

Ref: DEV-2501

Summary: Refactor emails about password reset into a Mail sub-class.

This refactors the emails produced by the PasswordResetter into their own sub-class of Mail. Before this it simply composed emails from the generic Mail class.

This will allow subscribers of the Mail.shouldSend hook to better differentiate between what emails are being sent.

Review

• Functional review done
• Potential edge cases thought about (behavior of the code with strange input, with strange internal state or possible interactions with other Matomo subsystems)
• Usability review done (is anything maybe unclear or think about anything that would cause people to reach out to support)
• Security review done
• Wording review done
• Code review done
• Tests were added if useful/possible
• Reviewed for breaking changes
• Developer changelog updated if needed
• Documentation added if needed
• Existing documentation updated if needed