Tweak user email confirmation alert

- Make sure is_activated is serialized to a bool (otherwise "0" will evaluate to true)
- Remove "error" class from message so it's more friendly
- Make the alert more prominent by mounting it into a new div at the top of the page
- Add loading UX to the resend button

src/Api/Serializer/CurrentUserSerializer.php

@@ -20,7 +20,7 @@ class CurrentUserSerializer extends UserSerializer
         $attributes = parent::getDefaultAttributes($user);
 
         $attributes += [
-            'isActivated'              => $user->is_activated,
+            'isActivated'              => (bool) $user->is_activated,
             'email'                    => $user->email,
             'readTime'                 => $this->formatDate($user->read_time),
             'unreadNotificationsCount' => (int) $user->getUnreadNotificationsCount(),

src/Api/Serializer/UserSerializer.php

@@ -55,7 +55,7 @@ class UserSerializer extends UserBasicSerializer
 
         if ($canEdit || $this->actor->id === $user->id) {
             $attributes += [
-                'isActivated' => $user->is_activated,
+                'isActivated' => (bool) $user->is_activated,
                 'email'       => $user->email
             ];
         }