Fixes #28 (#33)

We weren't writing a 200 status code post-delete because Gitlab returns
a 204 (empty but successful) by default. I updated this logic to change
that and also to refresh the tree.

The collapsed state of the tree will be wiped out if you delete a
bottom-level discussion but that's okay for now, not a high priority
right now.

cmd/comment.go

@@ -88,9 +88,9 @@ func DeleteComment(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	w.WriteHeader(res.StatusCode)
-
 	/* TODO: Check status code */
+	w.WriteHeader(http.StatusOK)
+
 	response := SuccessResponse{
 		Message: "Comment deleted succesfully",
 		Status:  http.StatusOK,