[ticket/12407] Allow changing of post_data, etc. at end of posting.php
* marc1706/ticket/12407:
[ticket/12407] Remove merge marker from posting.php
[ticket/12407] Fix incorrect @since line in event
[ticket/12407] Merge @change in doc block of event
[ticket/12407] Assign template variables again after merging develop-ascraeus
[ticket/12407] Add message_parser as passed variable to event
[ticket/12407] Allow changing of post_data, etc. at end of posting.php