Change the placeholder icon for the bookmarks

app/widgets/Groups/_groups_subscriptions.tpl

@@ -1,6 +1,6 @@
 {if="$subscriptions == null"}
     <ul class="thick">
-        <div class="placeholder icon pages">
+        <div class="placeholder icon bookmark">
             <h1>{$c->__('groups.empty_title')}</h1>
             <h4>{$c->__('groups.empty_text1')}</h4>
             <h4>{$c->__('groups.empty_text2')}</h4>

themes/material/css/style.css

@@ -816,6 +816,7 @@ main section > div:first-child:nth-last-child(2) ~ div .actions.fixed > div:last
 .icon.plane     { background-image: url(../img/placeholder/plane.png); }
 .icon.file      { background-image: url(../img/placeholder/file.png); }
 .icon.pages     { background-image: url(../img/icons/pages.svg); }
+.icon.bookmark  { background-image: url(../img/icons/bookmark.svg); }
 .icon.clipboard { background-image: url(../img/icons/assignment_turned_in.svg); }
 
 /* Definition list */