[FIX] website_sale: restore date filters

Those were removed with f9874b2b and restored in 14.0 (master at that point) with cc6000ab.

This commit restores the missing filters for the context filters to work on
the view used in stable.

addons/website_sale/views/sale_order_views.xml

@@ -15,6 +15,10 @@
                 <separator/>
                 <filter string="From Website" name="from_website" domain="[('website_id', '!=', False)]"/>
                 <separator/>
+                <!-- Dashboard filter - used by context -->
+                <filter string="Last Week" invisible="1" name="week" domain="[('date_order','&gt;', (context_today() - datetime.timedelta(days=7)).strftime('%%Y-%%m-%%d'))]"/>
+                <filter string="Last Month" invisible="1" name="month" domain="[('date_order','&gt;', (context_today() - datetime.timedelta(days=30)).strftime('%%Y-%%m-%%d'))]"/>
+                <filter string="Last Year" invisible="1"  name="year" domain="[('date_order','&gt;', (context_today() - datetime.timedelta(days=365)).strftime('%%Y-%%m-%%d'))]"/>
             </xpath>
         </field>
     </record>