Implement comment-deleting

static/js/issue_history.js

@@ -5,3 +5,18 @@ function toggleCommentEditable(element) {
     balloon.querySelector(".js-comment-editable").classList.toggle("hidden");
     balloon.querySelector(".js-comment-plain").classList.toggle("hidden");
 }
+
+function deleteComment(deleteUrl) {
+    if (window.confirm("Are you sure you want to delete this comment?")) {
+        fetch(deleteUrl, {
+            method: 'POST',
+            headers: { "X-CSRFToken": csrftoken },
+        }).then((response) => {
+            // yes this is super-indirect, but it "works for now" and we might revisit this whole bit anyway (e.g. use HTMX)
+            // if we revisit this and figure out we want to do what we do here, but more directly (i.e. just post a form) read this one:
+            // https://stackoverflow.com/questions/133925/javascript-post-request-like-a-form-submit
+            // in other words, in that case the simplest way forward is probably just to create that form and post it instead of using the fetch API
+            window.location.reload();
+        })
+    }
+}