Adds wallet name before to confirm delete

public/views/preferencesDeleteWallet.html

@@ -14,6 +14,10 @@
   </div>
   <div class="columns text-center m10t">
     <p translate class="size-14 text-gray">Permanently delete this wallet. THIS ACTION CANNOT BE REVERSED</p>
+    <div class="m10b">
+      <span translate>Wallet</span>: {{index.walletName}} 
+      <span ng-show="index.alias">({{index.alias}})</span>
+    </div>
     <button class="button round expand warning" ng-click="preferences.deleteWallet()" translate>
       Delete wallet
     </button>