diff --git a/addons/account/account_bank_statement.py b/addons/account/account_bank_statement.py
index 7cf00f50390..9f6cedd9102 100644
--- a/addons/account/account_bank_statement.py
+++ b/addons/account/account_bank_statement.py
@@ -542,8 +542,9 @@ class account_bank_statement_line(osv.osv):
                   ('reconcile_id', '=', False),
                   ('state', '=', 'valid'),
                   ('account_id.reconcile', '=', True),
-                  ('id', 'not in', excluded_ids),
-                  ('partner_id', 'in', (False, st_line.partner_id.id))]
+                  ('id', 'not in', excluded_ids),]
+        if st_line.partner_id:
+            domain.append(('partner_id', '=', st_line.partner_id.id))
         return domain
 
     def get_reconciliation_proposition(self, cr, uid, st_line, excluded_ids=None, context=None):
diff --git a/addons/hr_holidays/hr_holidays.py b/addons/hr_holidays/hr_holidays.py
index 6bc84b1cce2..c08bb75df8f 100644
--- a/addons/hr_holidays/hr_holidays.py
+++ b/addons/hr_holidays/hr_holidays.py
@@ -354,7 +354,7 @@ class hr_holidays(osv.osv):
         """ Override to avoid automatic logging of creation """
         if context is None:
             context = {}
-        context = dict(context, mail_create_nolog=True)
+        context = dict(context, mail_create_nolog=True, mail_create_nosubscribe=True)
         if values.get('state') and values['state'] not in ['draft', 'confirm', 'cancel'] and not self.pool['res.users'].has_group(cr, uid, 'base.group_hr_user'):
             raise AccessError(_('You cannot set a leave request as \'%s\'. Contact a human resource manager.') % values.get('state'))
         return super(hr_holidays, self).create(cr, uid, values, context=context)
@@ -421,7 +421,8 @@ class hr_holidays(osv.osv):
             elif record.holiday_type == 'category':
                 emp_ids = obj_emp.search(cr, uid, [('category_ids', 'child_of', [record.category_id.id])])
                 leave_ids = []
-                for emp in obj_emp.browse(cr, uid, emp_ids):
+                batch_context = dict(context, mail_notify_force_send=False)
+                for emp in obj_emp.browse(cr, uid, emp_ids, context=context):
                     vals = {
                         'name': record.name,
                         'type': record.type,
@@ -434,7 +435,7 @@ class hr_holidays(osv.osv):
                         'parent_id': record.id,
                         'employee_id': emp.id
                     }
-                    leave_ids.append(self.create(cr, uid, vals, context=None))
+                    leave_ids.append(self.create(cr, uid, vals, context=batch_context))
                 for leave_id in leave_ids:
                     # TODO is it necessary to interleave the calls?
                     for sig in ('confirm', 'validate', 'second_validate'):
diff --git a/addons/mail/ir_actions.py b/addons/mail/ir_actions.py
index 381d9c2b79d..4da175d970d 100644
--- a/addons/mail/ir_actions.py
+++ b/addons/mail/ir_actions.py
@@ -78,3 +78,16 @@ class actions_server(osv.Model):
         self.pool['mail.template'].send_mail(cr, uid, action.template_id.id, context.get('active_id'),
                                               force_send=False, raise_exception=False, context=context)
         return False
+
+    def _get_eval_context(self, cr, uid, action, context=None):
+        """ Override the method giving the evaluation context but also the
+        context used in all subsequent calls. Add the mail_notify_force_send
+        key set to False in the context. This way all notification emails linked
+        to the currently executed action will be set in the queue instead of
+        sent directly. This will avoid possible break in transactions. """
+        eval_context = super(actions_server, self)._get_eval_context(cr, uid, action, context=context)
+        # re-dictify, because eval_context['context'] is a frozendict
+        ctx = dict(eval_context.get('context', {}))
+        ctx['mail_notify_force_send'] = False
+        eval_context['context'] = ctx
+        return eval_context
diff --git a/addons/project/project_view.xml b/addons/project/project_view.xml
index 57a842e9ffd..5e0466f9993 100644
--- a/addons/project/project_view.xml
+++ b/addons/project/project_view.xml
@@ -405,6 +405,7 @@
                             <field name="project_id" domain="[('state','not in', ('close', 'cancelled'))]" on_change="onchange_project(project_id)" context="{'default_use_tasks':1}"/>
                             <field name="user_id"
                                 options='{"no_open": True}'
+                                on_change="onchange_user_id(user_id, context)"
                                 context="{'default_groups_ref': ['base.group_user', 'base.group_partner_manager', 'project.group_project_user']}"/>
                             <field name="planned_hours" widget="float_time"
                                     groups="project.group_time_work_estimation_tasks"
diff --git a/addons/project_issue/project_issue.py b/addons/project_issue/project_issue.py
index 72521902aa3..1a4db454921 100644
--- a/addons/project_issue/project_issue.py
+++ b/addons/project_issue/project_issue.py
@@ -319,7 +319,7 @@ class project_issue(osv.Model):
         context = dict(context or {})
         if vals.get('project_id') and not context.get('default_project_id'):
             context['default_project_id'] = vals.get('project_id')
-        if vals.get('user_id'):
+        if vals.get('user_id') and not vals.get('date_open'):
             vals['date_open'] = fields.datetime.now()
         if 'stage_id' in vals:
             vals.update(self.onchange_stage_id(cr, uid, None, vals.get('stage_id'), context=context)['value'])
@@ -335,8 +335,8 @@ class project_issue(osv.Model):
             vals['date_last_stage_update'] = fields.datetime.now()
             if 'kanban_state' not in vals:
                 vals['kanban_state'] = 'normal'
-        # user_id change: update date_start
-        if vals.get('user_id'):
+        # user_id change: update date_open
+        if vals.get('user_id') and 'date_open' not in vals:
             vals['date_open'] = fields.datetime.now()
 
         return super(project_issue, self).write(cr, uid, ids, vals, context)
diff --git a/addons/website/static/src/xml/website.editor.xml b/addons/website/static/src/xml/website.editor.xml
index daaf7e7c2d7..1940a77e00f 100644
--- a/addons/website/static/src/xml/website.editor.xml
+++ b/addons/website/static/src/xml/website.editor.xml
@@ -74,7 +74,7 @@
                             </label>
                         </h4>
                         <input type="text" class="form-control url email-address url-source"
-                               id="link-external" placeholder="http://openerp.com"/>
+                               id="link-external" placeholder="https://www.odoo.com"/>
                     </li>
                 </ul>
                 <div class="form-horizontal link-style">