[ADD] eCommerce: shipping page

Added a shipping page to the eCommerce section. Forward to master.

closes odoo/documentation#3229

Taskid: 3111638
Signed-off-by: Aarab Tom (toaa) <toaa@odoo.com>

content/applications/websites/ecommerce/checkout_payment_shipping.rst

@@ -9,4 +9,5 @@ Checkout, payment, and shipping
 
    checkout_payment_shipping/cart
    checkout_payment_shipping/checkout
+   checkout_payment_shipping/shipping
    checkout_payment_shipping/payments

content/applications/websites/ecommerce/checkout_payment_shipping/shipping.rst

@@ -0,0 +1,70 @@
+================
+Shipping methods
+================
+
+Depending on your shipping strategy, you have the choice to either use your :ref:`own shipping
+methods <ecommerce-own-shipping>`, or use an integration with an :ref:`existing shipping provider
+<ecommerce-shipping-providers>`.
+
+.. _ecommerce-own-shipping:
+
+Own shipping methods
+====================
+
+You can create your own custom shipping methods and define rules to compute shipping costs. To do
+so, go to :menuselection:`Website --> Configuration --> Shipping Methods`, and either select an
+**existing** shipping method, or :guilabel:`Create` one. When creating a shipping method, you can
+choose between
+:doc:`Fixed Price </applications/inventory_and_mrp/inventory/shipping/setup/delivery_method>`,
+:doc:`Based on Rules </applications/inventory_and_mrp/inventory/shipping/setup/delivery_method>`,
+and :guilabel:`Pickup in store`.
+
+Pickup in store
+---------------
+
+:guilabel:`Pickup in store` must first be **enabled** in the settings (:menuselection:`Website -->
+Configuration --> Settings --> Shipping section)` by checking :guilabel:`On Site Payments &
+Picking`. Once enabled, you can select and :guilabel:`Customize Pickup Sites`. :guilabel:`Picking
+sites` can be made **website-specific**, but are by default available for *all* websites.
+
+.. seealso::
+   - :doc:`/applications/inventory_and_mrp/inventory/shipping/setup/delivery_method`
+   - :doc:`/applications/inventory_and_mrp/inventory/shipping/operation/invoicing`
+   - :doc:`/applications/inventory_and_mrp/inventory/shipping/operation/multipack`
+   - :doc:`/applications/inventory_and_mrp/inventory/shipping/operation/cancel`
+
+.. _ecommerce-shipping-providers:
+
+Shipping providers
+==================
+
+Another solution is to use one of the integrations with an existing shipping provider. The advantage
+of using an integration is that delivery costs are automatically computed based on each order as
+well as generating shipping labels.
+
+.. seealso::
+   - :doc:`/applications/inventory_and_mrp/inventory/shipping/setup/third_party_shipper`
+   - :doc:`/applications/inventory_and_mrp/inventory/shipping/setup/ups_credentials`
+   - :doc:`/applications/inventory_and_mrp/inventory/shipping/setup/dhl_credentials`
+   - :doc:`/applications/inventory_and_mrp/inventory/shipping/operation/labels`
+
+Website availability
+====================
+
+Shipping methods can be made available on **specific** websites *only*, if desired. To do so, go to
+:menuselection:`Website --> Configuration --> Settings --> Shipping Methods`, and select the desired
+**shipping method**. In the :guilabel:`Website` field, set the website you want the shipping method
+to be restrained to. Leave the field **empty** for the method to be available on *all* websites.
+
+Delivery method at checkout
+===========================
+
+Customers can choose the shipping method at the end of the checkout process, at the
+:guilabel:`Confirm Order` step.
+
+.. image:: shipping/shipping-checkout.png
+   :align: center
+   :alt: Delivery method choice at checkout
+
+.. seealso::
+   :doc:`../checkout_payment_shipping/checkout`