As res.partner model is defined in base systray takes the base icon as icon
used in the systray when classifying activities by model. As base module has
no icon it leads to a blank icon being displayed in the systray. Purpose of
this commit is to use the icon from Contact application instead.
As contacts application now depends on mail we do it simply through
inheriting the systray_get_activities method that return the data to display
the systray elements.
This commit is linked to task ID 1882545 and PR #26797.
Purpose:
There are too many apps when someone starts to use odoo.
The user installs an app and see at least 6 menus -> too much !
Specification:
In mail module move contacts menu into new module 'contacts' to avoid this
useless app for new users but that can be useful afterward
Thibault Delavallée