[IMP] stock, stock_account: Inventory Adjustment dates

- Change "Force Accounting Date" label in "Accounting Date" on
  inventory adjustments.
- 'accounting_date' only visible in debug mode
- Improvement tooltip of accounting_date,date

TASK-1819891

addons/stock/models/stock_inventory.py

@@ -29,7 +29,8 @@ class Inventory(models.Model):
         'Inventory Date',
         readonly=True, required=True,
         default=fields.Datetime.now,
-        help="The date that will be used for the stock level check of the products and the validation of the stock move related to this inventory.")
+        help="If the inventory adjustment is not validated, date at which the theoritical quantities have been checked.\n"
+             "If the inventory adjustment is validated, date at which the inventory adjustment has been validated.")
     line_ids = fields.One2many(
         'stock.inventory.line', 'inventory_id', string='Inventories',
         copy=True, readonly=False,

addons/stock_account/models/stock.py

@@ -15,10 +15,10 @@ class StockInventory(models.Model):
     _inherit = "stock.inventory"
 
     accounting_date = fields.Date(
-        'Force Accounting Date',
-        help="Choose the accounting date at which you want to value the stock "
-             "moves created by the inventory instead of the default one (the "
-             "inventory end date)")
+        'Accounting Date',
+        help="Date at which the accounting entries will be created"
+             " in case of automated inventory valuation."
+             " If empty, the inventoy date will be used.")
 
     @api.multi
     def post_inventory(self):

addons/stock_account/views/stock_account_views.xml

@@ -19,7 +19,7 @@
             <field name="inherit_id" ref="stock.view_inventory_form"/>
             <field name="arch" type="xml">
                 <xpath expr="//field[@name='date']" position="after">
-                    <field name="accounting_date" attrs="{'readonly':[('state','!=', 'draft')]}"/>
+                    <field name="accounting_date" attrs="{'readonly':[('state','!=', 'draft')]}" groups="base.group_no_one"/>
                 </xpath>
             </field>
         </record>