Merge branch 'vk-email-filter' into 'master'

Hlavičky e-mailu pro třídění

See merge request !7

owl.py

@@ -1700,6 +1700,11 @@ def send_notify_to_dest(post, topic, course, author, target, dest, reply_to):
         ('Post by', full_name(author)),
         ('Posted',  post.created.replace(microsecond=0).astimezone().strftime("%Y-%m-%d %H:%M:%S")),
     ]
+
+    msg['X-Owl-Semester'] = course.sident
+    msg['X-Owl-Course'] = course.ident
+    msg['X-Owl-Topic'] = topic.ident
+
     if post.modified:
         h.append(('Updated', post.modified.replace(microsecond=0).astimezone().strftime("%Y-%m-%d %H:%M:%S")))
     h.append(('URL', url_for('topic_index', sident=course.sident, cident=course.ident, tident=topic.ident, student_uid=target_uid, _external=True, _scheme='https')))