[ADD] [8.0] 'mail' migration;
[ADD] update aliases for mail.group and res.users
[IMP] update module coverage table
[IMP] Remove setting a default unnecessarily
[FIX] Don't call map_values with the same source and target table
[ADD] Load noupdate data
Merge pull request #116 from OpenUpgrade-dev/8.0-mail-onesteinbv

8.0 'mail' (onesteinbv)