Require email verification for contact form

src/UI/UIWindowFeedback.js

@@ -17,12 +17,20 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
+import UIAlert from './UIAlert.js';
 import UIWindow from './UIWindow.js'
 
 async function UIWindowQR(options){
     return new Promise(async (resolve) => {
         options = options ?? {};
 
+        if ( ! window.user.email_confirmed ) {
+            await UIAlert({
+                message: i18n('contact_us_verification_required'),
+            });
+            return resolve();
+        }
+
         let h = '';
         h += `<div style="padding: 20px; margin-top: 0;">`;
             // success