WUI: the error message page for a writeable file/directory nonobviously includes the write cap

[davidsarah]

In the case of a directory, for example, the target URL of the 'More info on this directory' link includes the write cap. This is not excess authority because the 'More info' page itself includes the write cap and so needs to know it, however, it's not visually obvious that by sending someone just the HTML file of the error page, you are giving them the write cap.

(OTOH, I was prompted to file this ticket by someone who did exactly that and did understand that they were giving away the write cap.)