[8.0][IMP][mail_tracking] Speed installation time and discard concurrent events

[antespi]

Several improvements after using mail_tracking_* addons in production environment:

• Remove post_init_hook: When installing these addons there's no mail_tracking_mail objects in DB, so there's no point to relate them to any res.partner
• Add pre_init_hook: Create and set a value to compute + store columns (and email_score column), before installing this addon
• Remove compute and api.depends on email_score fields
• Do not save concurrent open or click events:
  • If there's two concurrent open events (events received with a delta time less than 10 seconds) only the first one will be saved, the second one will be discarded
  • If there's two concurrent click events (events received with a delta time less than 5 seconds, and referred to the same URL) only the first one will be saved, the second one will be discarded.
• Propagate bounce event to mass_mailing stats
• Improvements on mail_tracking_mailgun proposed by @yajo after merging

@Tecnativa

[rafaelbn]

Hi @antespi , runbot and travis fails

[pedrobaeza]

Comment that this is in seconds

[antespi]

@pedrobaeza Comments fixed or answered, thanks

[pedrobaeza]

👍

[carlosdauden]

👍