XWIKI-12772: Create extension points for the top menu and stop hardcoding its content.

* Fix tests.

xwiki-platform-core/xwiki-platform-test/xwiki-platform-test-ui/src/main/java/org/xwiki/test/ui/po/BasePage.java

@@ -428,7 +428,10 @@ public LoginPage login()
      */
     public String getCurrentUser()
     {
-        return this.userLink.getText();
+        toggleDrawer();
+        String user = this.userLink.getText();  
+        toggleDrawer();
+        return user;
     }
 
     /**