hr_holidays_usability: add support for emails

Many small fixes and improvements

hr_holidays_usability/wizard/hr_holidays_mass_allocation.py

@@ -3,7 +3,7 @@
 # @author Alexis de Lattre <alexis.delattre@akretion.com>
 # License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
 
-from odoo import models, fields, api, workflow, _
+from odoo import models, fields, api, _
 from odoo.exceptions import UserError
 
 
@@ -62,10 +62,10 @@ class HrHolidaysMassAllocation(models.TransientModel):
                 'type': 'add',
                 'holiday_type': 'employee',
                 'holiday_status_id': self.holiday_status_id.id,
+                'state': 'confirm',
                 })
             if auto_approve:
-                # TODO: handle the no_email_notification
-                hol.action_validate()
+                hol.with_context(no_email_notification=True).action_validate()
             alloc_hol_ids.append(hol.id)
         action = self.env['ir.actions.act_window'].for_xml_id(
             'hr_holidays', 'open_allocation_holidays')

hr_holidays_usability/wizard/hr_holidays_post_view.xml

@@ -15,7 +15,7 @@
             <group name="main" string="Leave Requests to Post">
                 <field name="state" invisible="1"/>
                 <field name="before_date" states="draft"/>
-                <field name="holidays_to_post_ids" nolabel="1"
+                <field name="holidays_to_post_ids" nolabel="1" colspan="2"
                     context="{'tree_view_ref': 'hr_holidays.view_holiday'}"
                     states="done"/>
             </group>