defined icon_for_event method

Signed-off-by: Alberto Molpeceres <alberto.molpeceres@gmail.com>

Author: cokanan

app/helpers/conclave/events_helper.rb

@@ -1,6 +1,16 @@
 module Conclave
   module EventsHelper
 
+  def icon_for_event(event, size, options={})
+    if event.icon?
+      photo_url = event.icon.url(size)
+      options.merge!(:alt => I18n.t("tog_conclave.helper.photo_for_event", :name => event.title))
+      return image_tag(photo_url, options) if photo_url
+    else
+      return image_tag("/tog_conclave/images/#{config["plugins.tog_conclave.image.default"]}" , options)
+    end
+	end
+
     def write_event_time(event)
       "#{I18n.t('tog_conclave.site.from_time')} #{event.starting_time} #{I18n.t('tog_conclave.site.to_time')} #{event.ending_time}"
     end