Move hardcoded calendar images to css classes.

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@3477 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/views/common/_calendar.rhtml

@@ -11,14 +11,7 @@ while day <= calendar.enddt %>
 <p class="day-num"><%= day.day %></p>	
 <% calendar.events_on(day).each do |i| %>
   <% if i.is_a? Issue %>
-  <div class="<%= i.css_classes %> tooltip">
-  <%= if day == i.start_date && day == i.due_date
-        image_tag('arrow_bw.png')
-      elsif day == i.start_date
-        image_tag('arrow_from.png') 
-      elsif day == i.due_date
-		image_tag('arrow_to.png') 
-      end %>
+  <div class="<%= i.css_classes %> <%= 'starting' if day == i.start_date %> <%= 'ending' if day == i.due_date %> tooltip">
   <%= h("#{i.project} -") unless @project && @project == i.project %>
   <%= link_to_issue i, :truncate => 30 %>
   <span class="tip"><%= render_issue_tooltip i %></span>