[enh] Affiche du thumbnail dans la liste des annonces d'un vendeur

src/pages/account/account.html

 <ion-content padding>
 
   <ion-row>
-    <ion-col col-12 col-sm-12 col-lg-6>
-      <img src="{{ accountService.acc.logo }}">
+    <ion-col col-12>
+      <img class="logo" src="{{ accountService.acc.logo }}">
       <h2>{{ accountService.acc.title }}</h2>
       <pre>{{ accountService.acc.desc }}</pre>
       <h3>Annonces</h3>

src/pages/account/account.scss

 account {
 
-  img {
+  .logo {
     float: left;
     max-width: 100px;
     margin-top: 1.8rem;

src/pages/account/account.ts

@@ -36,6 +36,9 @@ export class AccountPage implements OnInit {
             this.announces = []
             for (const a of res.announces) {
               if (parseInt(a.stock)) {
+                if (a.images.length) {
+                  a.thumbnail = a.images[0]
+                }
                 this.announces.push(a)
               }
             }