Improve mark-up on offer browsing page

Using well to break up content.

oscar/templates/oscar/offer/detail.html

 	{% endif %}
 
     {% if offer.description %}
-    {{ offer.description|safe }}
+	<div class="well">
+		{{ offer.description|safe }}
+	</div>
     {% endif %}
 
     {% if upsell_message %}
     {% if products.count %}
 		<section>
 			<div class="mod">
-				{% if page_obj %}
-					{% include "partials/pagination.html" %}
-				{% endif %}
+				{% include "partials/pagination.html" %}
 				<ol class="products four">
 					{% for product in products %}
 					<li>{% include "catalogue/partials/product.html" %}</li>
 					{% endfor %}
 				</ol>
-				{% if page_obj %}
-					{% include "partials/pagination.html" %}
-				{% endif %}
+				{% include "partials/pagination.html" %}
 			</div>
 		</section>
     {% else %}

oscar/templates/oscar/partials/pagination.html

 {% load display_tags %}
 {% load i18n %}
 
-{% if total_pages > 1 %}
+{% if paginator.num_pages > 1 %}
 	<div>
 		<ul class="pager">
 			{% if page_obj.has_previous %}