Hide the scheduled post date and time behind a 'details'.

html.c

@@ -457,18 +457,22 @@ xs_html *html_note(snac *user, const char *summary,
     if (edit_id == NULL || is_draft || is_scheduled(user, edit_id)) {
         xs_html_add(form,
             xs_html_tag("p",
-                xs_html_text(L("Post date and time (empty, right now; in the future, schedule for later):")),
-                xs_html_sctag("br", NULL),
-                xs_html_sctag("input",
-                    xs_html_attr("type",  "date"),
-                    xs_html_attr("value", post_date ? post_date : ""),
-                    xs_html_attr("name",  "post_date")),
-                xs_html_text(" "),
-                xs_html_sctag("input",
-                    xs_html_attr("type",  "time"),
-                    xs_html_attr("value", post_time ? post_time : ""),
-                    xs_html_attr("step",  "1"),
-                    xs_html_attr("name",  "post_time"))));
+                xs_html_tag("details",
+                    xs_html_tag("summary",
+                        xs_html_text(L("Scheduled post..."))),
+                    xs_html_tag("p",
+                        xs_html_text(L("Post date and time:")),
+                        xs_html_sctag("br", NULL),
+                        xs_html_sctag("input",
+                            xs_html_attr("type",  "date"),
+                            xs_html_attr("value", post_date ? post_date : ""),
+                            xs_html_attr("name",  "post_date")),
+                        xs_html_text(" "),
+                        xs_html_sctag("input",
+                            xs_html_attr("type",  "time"),
+                            xs_html_attr("value", post_time ? post_time : ""),
+                            xs_html_attr("step",  "1"),
+                            xs_html_attr("name",  "post_time"))))));
     }
 
     if (edit_id)