[FIX] mass_mailing: fixed label for template choice when creating a new wave of mass mailing
[FIX] mass_mailing: fixed model used for the mass mailing itself when creating a new wave. It was receiving active_model aka mass.mailing.create instead of the correct target model (ex res.partner when mailing partners). Also updated a field string to be clearer.
[FIX] mass_mailing: wave creation wizard: fixed closing button jumping after setting the wave name
[IMP] mass_mailing: added a link to create a wave directly from the kanban view
[FIX] mass_mailing: fixed previous fixes, because of order of loaded files
[MERGE] [FIX] mass_mailing: various fixes

- [FIX] mass_mailing: fixed model used for the mass mailing itself when creating a new wave. It was receiving active_model aka mass.mailing.create instead of the correct target model (ex res.partner when mailing partners). Also updated a field string to be clearer.
- [FIX] mass_mailing: wave creation wizard: fixed closing button jumping after setting the wave name
- [FIX] mass_mailing: fixed label for template choice when creating a new wave of mass mailing
- [IMP] mass_mailing: added a link to create a wave directly from the kanban view
[FIX] account: move purchase journal from demo to data