[8.0][IMP][mail_tracking] Speed installation time and discard concurrent events#82

Merged

pedrobaeza merged 6 commits intoOCA:8.0from Tecnativa:8.0-mail_tracking_imp

Sep 9, 2016

+252-92

Commits on Sep 2, 2016

Commits on Sep 6, 2016

Remove tracking_state related from mail.mail.statistics
antespi
committed

Commits on Sep 7, 2016

[FIX] Singleton required
antespi
committed

Commits on Sep 8, 2016

Protect import
antespi
committed