Implement random password generation (create/edit account)

templates/account_edit.html.twig

@@ -62,6 +62,14 @@
                     <td><label for="edit_password_repeat">Repeat password:</label></td>
                     <td><input type="password" id="edit_password_repeat" name="password_repeat" value="{{ formData['password_repeat'] | default('') }}"/></td>
                 </tr>
+                <tr>
+                    <td colspan="2">
+                        <label>
+                            <input type="checkbox" name="password_generate_random" {{ formData['password_generate_random'] | default('') ? 'checked' : '' }}/>
+                            Generate new random password
+                        </label>
+                    </td>
+                </tr>
             </table>
         </div>