swap pin for heart [ci skip]

app/views/likes/_likes_container.haml

@@ -3,7 +3,7 @@
 -#   the COPYRIGHT file.
 
 - if likes_count > 0
-  = image_tag('icons/heart.png')
+  = image_tag('icons/pin.png')
   - if target_type == "Comment"
     = link_to t('likes.likes.people_like_this_comment', :count => likes_count), comment_likes_path(target_id), :class => "expand_likes"
   - else

app/views/templates/likes_info.jst

@@ -1,5 +1,5 @@
 <% if(likes_count > 0) { %>
-  <img alt="Heart" src="/images/icons/heart.png" />
+  <img alt="Heart" src="/images/icons/pin.png" />
   <% if(likes && likes.length == 0) { %>
 	  <a href="#" class="expand_likes">
 	    <%= Diaspora.I18n.t('stream.likes', {count: likes_count}) %>