V.15 migration

project odoo

QWEB import is moved to 'assets' dict

JS import is moved to 'assets' dict

Previous declaration will not work: neither for views nor for widgets

XML
templates rendering

t-raw is deprecated : use t-out

mail data might be prepared using QWEB

Need to redefine all mail templates and make sure all tags are safe

Python
fields & methods

xmlid_to_res_id is renamed to _xmlid_to_res_id

render_template should define engine

Check all methods

Instead of require: use 'import from'

New logic is already implemented to many widgets, services, and views