[FIX] project: reorder inherit to be able to pass through portal before mail thread

Purpose is to enable override of mail.thread methods in portal mixin.
An example is the _notification_recipients method defined in mail.thread
and customized in portal.mixin.

addons/project/models/project.py

@@ -68,7 +68,7 @@ class ProjectTaskType(models.Model):
 class Project(models.Model):
     _name = "project.project"
     _description = "Project"
-    _inherit = ['mail.alias.mixin', 'mail.thread', 'portal.mixin']
+    _inherit = ['portal.mixin', 'mail.alias.mixin', 'mail.thread']
     _inherits = {'account.analytic.account': "analytic_account_id"}
     _order = "sequence, name, id"
     _period_number = 5
@@ -444,7 +444,7 @@ class Task(models.Model):
     _name = "project.task"
     _description = "Task"
     _date_name = "date_start"
-    _inherit = ['mail.thread', 'mail.activity.mixin', 'portal.mixin', 'rating.mixin']
+    _inherit = ['portal.mixin', 'mail.thread', 'mail.activity.mixin', 'rating.mixin']
     _mail_post_access = 'read'
     _order = "priority desc, sequence, date_start, name, id"