add information flag to event items on past events, wip #2

layouts/partials/calendar_card.html

@@ -1,5 +1,6 @@
-    <div class='card calendar'>
+{{  $t := (time .Params.event_end) }} 
-          <article class="h-event calendar">
+    <div class='card calendar {{ if $t.Before now }}past{{end}}'>
+          <article class="h-event calendar ">
             <header>
               <h2 class="p-name"><a href="{{ .Permalink }}" class="u-url">{{ .Title }}</a></h2>
             </header>
@@ -25,4 +26,5 @@
 
 
           </article>
-    </div>
+    </div>
+