Event feed: Icons for some events

app/views/events/_event_merge_request.html.haml

@@ -1,3 +1,5 @@
+- if event.action_name == "merged"
+  .event_icon= image_tag "event_mr_merged.png"
 = image_tag gravatar_icon(event.author_email), :class => "avatar"
 %strong #{event.author_name} 
 %span.event_label= event.action_name

app/views/events/_event_push.html.haml

@@ -1,7 +1,9 @@
 %div
+  .event_icon= image_tag "event_push.png"
   = image_tag gravatar_icon(event.author_email), :class => "avatar"
   %strong #{event.author_name} 
   %span.event_label= event.push_action_name
+  = event.ref_type
   = link_to project_commits_path(event.project, :ref => event.ref_name) do
     %strong= event.ref_name
   at