user card: show that the account is locked if it is

src/components/user_card_content/user_card_content.vue

@@ -15,7 +15,7 @@
           <div class="name-and-screen-name">
             <div :title="user.name" class='user-name'>{{user.name}}</div>
             <router-link class='user-screen-name':to="{ name: 'user-profile', params: { id: user.id } }">
-              <span>@{{user.screen_name}}</span>
+              <span>@{{user.screen_name}}</span><span v-if="user.locked"><i class="icon icon-lock"></i></span>
               <span class="dailyAvg">{{dailyAvg}} {{ $t('user_card.per_day') }}</span>
             </router-link>
           </div>