Now it's much clearer when looking at the code, that these routes are about
project-hosted tickets, and it's easier to see where the author-hosted
equivalents are missing.
HTML forms support only GET and POST methods. One way to bypass that is
to send the form using JS. But I don't want that. Another is to send a
POST with a hidden form field which specifies the read method. This is
what 'postTicketR' does.