[IMP] project: add customer field on task kanban
[IMP] project: add customer field on task kanban

To make the kanban view of tasks more readable, we now display
the customer name on kanban, if the customer is not present
then display the email_from.

task-1931168

closes odoo/odoo#31045

Signed-off-by: Jérome Maes (jem) <6964489703ed973b467c16e75b2abe91a57e12f6@openerp.com>
ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo