Website: Add links to responsibilities headings on department handbook pages. (#23159)

Closes: #22995

Changes:
- Updated the handbook's page script to add an unordered list of links
to headings for responsibilities on department handbook pages.

website/assets/js/pages/handbook/basic-handbook.page.js

@@ -123,6 +123,13 @@ parasails.registerPage('basic-handbook', {
       let startValue = parseInt(ol.getAttribute('start'), 10) - 1;
       ol.style.counterReset = 'custom-counter ' + startValue;
     });
+    // Add links to the responsibilities under the responsibilities heading.
+    if($('#responsibilities')){
+      let responsibilitiesLinksHtml = '<ul>\n';
+      $('h3').each((unused, el)=>{ responsibilitiesLinksHtml += '<li><a href="#'+_.escape($(el).attr('id'))+'">'+_.escape($(el).text())+'</a></li>\n';  });
+      responsibilitiesLinksHtml+= '</ul>';
+      $('#responsibilities + p').after(responsibilitiesLinksHtml);
+    }
   },
 
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