Fix a bug : take last posts and not first if there is no new posts with the current year

generators/index.py

@@ -359,7 +359,7 @@ class Index(DynastieGenerator):
         posts = Post.objects.filter(creation_date__year=cur_year, published=True, front_page=True).order_by('-creation_date')
 
         if posts.count() < self.posts_per_page:
-            posts = Post.objects.all()[:self.posts_per_page]
+            posts = Post.objects.all().order_by('-creation_date')[:self.posts_per_page]
 
         self.dirname = ''
         self.generatePages(dom, posts, src, output, 'index')