[FIX] mrp: prevent quantity/lot/SN changes from work orders 'manager view'

This revision ensures that users cannot modify the current quantity or
enter lot numbers from the so-called manager view. This is because the
'tablet view' is not aware of the changes made in the manager view.

addons/mrp/views/mrp_workorder_views.xml

@@ -140,13 +140,13 @@
                 <page string="Current Production">
                     <group>
                         <group>
-                            <field name="qty_producing" string="Current Qty" attrs="{'readonly': ['|', ('product_tracking', '=', 'serial'), ('state', 'in', ('done', 'cancel'))]}"/>
-                            <field name="final_lot_id" context="{'default_product_id': product_id}" domain="['|', '&amp;', ('product_id', '=', product_id), ('product_id.tracking', '!=', 'serial'), ('use_next_on_work_order_id', '=', id)]" attrs="{'invisible': [('product_tracking', '=', 'none')]}" groups="stock.group_production_lot"/>
+                            <field name="qty_producing" string="Current Qty" attrs="{'readonly': ['|', ('product_tracking', '=', 'serial'), ('state', 'in', ('done', 'cancel'))]}" readonly="1"/>
+                            <field name="final_lot_id" context="{'default_product_id': product_id}" domain="['|', '&amp;', ('product_id', '=', product_id), ('product_id.tracking', '!=', 'serial'), ('use_next_on_work_order_id', '=', id)]" attrs="{'invisible': [('product_tracking', '=', 'none')]}" groups="stock.group_production_lot" readonly="1"/>
                             <field name="product_tracking" invisible="1"/>
                         </group>
                     </group>
                     <field name="move_raw_ids" invisible="1"/>
-                    <field name="active_move_line_ids" attrs="{'invisible': [('active_move_line_ids', '=', [])]}">
+                    <field name="active_move_line_ids" attrs="{'invisible': [('active_move_line_ids', '=', [])]}" readonly="1">
                         <tree editable="bottom" create="0" delete="0">
                             <field name="product_id"/>
                             <field name="product_uom_qty" readonly="1" string="To Consume"/>