added in publisher relationship (via book_publisher_link), removed debug, also removed ma.Nested, not needed?

templates/books.html

@@ -23,7 +23,7 @@
         <tr>
 		  <td data-sort="{{book.id}}"><a href="/book/{{book.id}}">{{book.title}}</a></td>
 		  <td>{{ book.author[0]['surname'] }}, {{book.author[0]['firstnames']}}</td>
-		  <td>{{ book.publisher}}</td>
+		  <td>{{ book.publisher[0]['name']}}</td>
 		  <td align="center">
 		    {% if book.condition == "Good" %}
 				<i class="fas fa-book" style="color:black"></i>