Warn if the user try to restore a card in an archived list

client/components/main/layouts.styl

@@ -65,6 +65,9 @@ h3, h4, h5, h6
   a
     color: #aa8f09
 
+.small
+  font-size: 0.8em
+
 a
   color: inherit
   cursor: pointer

client/components/sidebar/sidebarArchives.jade

@@ -6,5 +6,7 @@ template(name="archivesSidebar")
       a.js-restore Restore
       | -
       a.js-delete Delete
+    if cardIsInArchivedList
+      p.quiet.small (warning: this card is in an archived list) <br>
   else
     p.no-items-message No archived cards.

client/components/sidebar/sidebarArchives.js

@@ -2,10 +2,15 @@ BlazeComponent.extendComponent({
   template: function() {
     return 'archivesSidebar';
   },
+
   archivedCards: function() {
     return Cards.find({archived: true});
   },
 
+  cardIsInArchivedList: function() {
+    return this.currentData().list().archived;
+  },
+
   onRendered: function() {
     //XXX We should support dragging a card from the sidebar to the board
   },