fixed BUG-4 (books only showing 1 author)

BUGs

@@ -4,8 +4,6 @@ BUG-2:		series does not deal with calcd_rating...
 
 BUG-3:		alter a condition, covertype, etc. and its not in drop-down list (even though db look via index is correct, e.g books.html shows updated covertype)
 
-BUG-4:		show books, only shows first author
-
 BUG-6:		author,series, etc. do not have explicit ordering like sub-books... sort of irritating / needs code and DB fix
 			- add/remove authors, and after save they are ordered by author.id, not order of addition (prob. needs book_author_link to have an auth_num)
 

templates/books.html

@@ -4,7 +4,7 @@
 <h3>All Books</h1>
 	<table id="book_table" class="table table-striped table-sm" data-toolbar="#toolbar" data-search="true">
 	  <thead>
-	  <tr class="thead-light"><th>Title</th><th>Author</th><th>Publisher</th><th>Condition</th><th>Owned</th><th>Covertype</th></tr>
+	  <tr class="thead-light"><th>Title</th><th>Author(s)</th><th>Publisher</th><th>Condition</th><th>Owned</th><th>Covertype</th></tr>
 	  </thead>
 	  <tbody>
       {% for book in books %}
@@ -14,7 +14,11 @@
 		  {% else %}
 		  	<td data-sort="{{book.id}}"><a href="/book/{{book.id}}">{{book.title}}</a></td>
 		  {% endif %}
-		  <td>{{ book.author[0]['surname'] }}, {{book.author[0]['firstnames']}}</td>
+		  <td>
+		  {% for auth in book.author %}
+			  {{ auth['surname'] }}, {{auth['firstnames']}}
+		  {% endfor %}
+		  </td>
 		  <td>{{ GetPublisherById(book.publisher)}}</td>
 		  <td align="center">
 		  	{% set cond = GetConditionById(book.condition) %}