Use a dedicated page on product form for web shop fields

modules/web_shop/view/product_product_form.xml

@@ -2,7 +2,7 @@
 <!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
 this repository contains the full copyright notices and license terms. -->
 <data>
-    <xpath expr="//notebook/page[@id='customers']" position="inside">
+    <xpath expr="//notebook/page[@id='web_shop']" position="inside">
         <field name="web_shops" colspan="4"/>
     </xpath>
 </data>

modules/web_shop/view/product_template_form.xml

@@ -2,10 +2,12 @@
 <!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
 this repository contains the full copyright notices and license terms. -->
 <data>
-    <xpath expr="//notebook/page[@id='customers']" position="inside">
-        <group name="web_shop_description" colspan="4" col="-1">
-            <field name="web_shop_description"/>
-            <field name="web_shop_description" string="Edit" widget="html" xexpand="0"/>
-        </group>
+    <xpath expr="//notebook" position="inside">
+        <page string="Web Shop" id="web_shop">
+            <group name="web_shop_description" colspan="4" col="-1">
+                <field name="web_shop_description"/>
+                <field name="web_shop_description" string="Edit" widget="html" xexpand="0"/>
+            </group>
+        </page>
     </xpath>
 </data>

modules/web_shop_shopify/view/product_template_form.xml

@@ -2,8 +2,10 @@
 <!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
 this repository contains the full copyright notices and license terms. -->
 <data>
-    <xpath expr="//page[@id='customers']" position="inside">
+    <xpath expr="//page[@id='web_shop']" position="inside">
+        <newline/>
         <label name="shopify_uom"/>
         <field name="shopify_uom"/>
+        <newline/>
     </xpath>
 </data>