Hi James, Yes this is the right forum for any questions related to the Glossary module in Moodle (all versions).
Please stick to the usual rule: one question per post only. I am answering your first question in this discussion and have started another discussion to answer your second question.
You are quite right, there are no Maximum attachment size or Maximum number of attachments settings in the Forum settings, unlike in the Forum settings. There should of course be one. The code in mod/questionnaire/edit.php says:
$maxfiles = 99; // TODO: add some setting
$maxbytes = $course->maxbytes; // TODO: add some setting
I will post an 'improvement" request in the Moodle Tracker for future versions.
However this does not quite answer your question. You want to prevent the students from attaching files to their Glossary definitions. What about teachers? Will they be prevented as well?
Also, even in you could prevent students (or any-one) from attaching images (or other files) to their Glossary definitions, since the HTML editor is available to them when editing the Definition, they could still use the Insert/Edit image on the toobar to add images inside their Definition text, so what?
It would help if you said why you want to do this (prevent your students from uploading images to their glossary definitions). After all, if you set your Glossary to Approved by default: No, you (as teacher) could always remove any "offending" images from the students' new entries before approving them. Or else what is exactly the problem?
Joseph