We already use a token for preventing CSRF when marking notifications read.
Making a user confirm the marking read action serves no real purpose. No
information will be lost by just marking the notifications read but it will
prevent users from always having to confirm this action.
PHPBB3-13189
* ticket/11568:
[ticket/11568] Split status code and html debug assertion into two methods
[ticket/11568] Add comma at end of array key-value couple
[ticket/11568] Invert logic for asserting the response
[ticket/11568] Use static calls for static methods
Conflicts:
tests/test_framework/phpbb_functional_test_case.php
