Fix get_post_link template tag

It now generates dates in links correctly

blog/templatetags/blog_link.py

@@ -12,4 +12,5 @@ def get_post_relative_link(post):
 
 @register.simple_tag(takes_context = True)
 def get_post_link(context, post):
-    return context['request'].build_absolute_uri(reverse('blog:read', args=(post.created_at.year, post.created_at.month, post.created_at.day, post.slug)))
+    return context['request'].build_absolute_uri(get_post_relative_link(post))
+