[ADD] Sales: Stimulate customers with quotations deadline

Origin : https://docs.google.com/document/d/1-feLlx-RvabamODE3JEfCnfpl6EwTa1_hhpqDB2HQCA/edit

sales/send_quotations/quotationsdeadline.rst

@@ -0,0 +1,33 @@
+============================================
+Stimulate customers with quotations deadline
+============================================
+
+As you send quotations, it is important to set a quotation deadline;
+Both to entice your customer into action with the fear of missing out on
+an offer and to protect yourself. You don’t want to have to fulfill an
+order at a price that is no longer cost effective for you.
+
+Set a deadline
+==============
+
+On every quotation or sales order you can add an *Expiration Date*.
+
+.. image:: media/quotationsdeadline01.png
+  :align: center
+
+Use deadline in templates
+=========================
+
+You can also set a default deadline in a *Quotation Template*. Each
+time that template is used in a quotation, that deadline is applied. You
+can find more info about quotation templates `here 
+<https://docs.google.com/document/d/11UaYJ0k67dA2p-ExPAYqZkBNaRcpnItCyIdO6udgyOY/edit>`_.
+
+.. image:: media/quotationsdeadline02.png
+  :align: center 
+
+On your customer side, they will see this.
+
+.. image:: media/quotationsdeadline03.png
+  :align: center 
+

sales/send_quotations/terms_and_conditions.rst

@@ -18,14 +18,16 @@ Go to :menuselection:`SALES --> Configuration --> Settings` and activate
 *Default Terms & Conditions*.
 
 .. image:: media/terms_and_conditions01.png 
-  :align: center 
+  :align: 
+  center 
  
 In that box you can add your default terms & conditions. They will then
 appear on every quotation, SO and invoice.
 
 .. image:: media/terms_and_conditions02.png 
   :align: center 
-
+.. image:: media/quote_template02.png
+  :align: center
 Set up more detailed terms & conditions
 ========================================