Implement board archive and restoration

client/components/main/header.jade

@@ -31,7 +31,7 @@ template(name="header")
       The main bar is a colorful bar that provide all the meta-data for the
       current page. This bar is contextual based.
       If the user is not connected we display "sign in" and "log in" buttons.
-    #header-main-bar
+    #header-main-bar(class="{{#if wrappedHeader}}wrapper{{/if}}")
       if $.Session.get 'currentBoard'
         +headerBoard
       else
@@ -39,3 +39,7 @@ template(name="header")
 
 template(name="headerTitle")
   h1 LibreBoard
+  .board-header-btns.right
+    a.board-header-btn.js-open-archived-board
+      i.fa.fa-archive
+      span Archives