officejs_support_request_ui: fix style for <h*> in comment list

<h1>, <h2> ... currently have a style applied by gadget_nojqm.css that
does not make them look like header.

Apply a local override for now.

bt5/erp5_officejs_support_request_ui/PathTemplateItem/web_page_module/gadget_supportrequest_pt_form_view_discussable_css.css

@@ -26,3 +26,32 @@ hr#post_item {
   margin-block-start: 1em;
   margin-block-end: 1em;
 }
+
+#post_list li h1 {
+  font-size: 2em;
+  font-weight: bold;
+}
+
+#post_list li h2 {
+  font-size: 1.5em;
+  font-weight: bold;
+}
+
+#post_list li h3 {
+  font-size: 1.17em;
+  font-weight: bold;
+}
+
+#post_list li h4 {
+  font-weight: bold;
+}
+
+#post_list li h5 {
+  font-size: 0.83em;
+  font-weight: bold;
+}
+
+#post_list li h6 {
+  font-size: 0.67em;
+  font-weight: bold;
+}

bt5/erp5_officejs_support_request_ui/PathTemplateItem/web_page_module/gadget_supportrequest_pt_form_view_discussable_css.xml

@@ -260,7 +260,7 @@
                     </tuple>
                     <state>
                       <tuple>
-                        <float>1542360993.57</float>
+                        <float>1542361236.16</float>
                         <string>GMT+9</string>
                       </tuple>
                     </state>