Add links to toggle WIP status (#14677)

* Add links to toggle PR WIP status

* Allow PR author to toggle WIP status

* refactors and restyling, remove links from translations

Co-authored-by: Norwin <noerw@users.noreply.github.com>
Co-authored-by: silverwind <me@silverwind.io>

web_src/js/index.js

@@ -909,6 +909,17 @@ async function initRepository() {
       return false;
     });
 
+    // Toggle WIP
+    $('.toggle-wip a, .toggle-wip button').on('click', async (e) => {
+      e.preventDefault();
+      const {title, wipPrefix, updateUrl} = e.currentTarget.closest('.toggle-wip').dataset;
+      await $.post(updateUrl, {
+        _csrf: csrf,
+        title: title?.startsWith(wipPrefix) ? title.substr(wipPrefix.length).trim() : `${wipPrefix.trim()} ${title}`,
+      });
+      reload();
+    });
+
     // Issue Comments
     initIssueComments();