Image attachments are now sent inline to be viewed directly in the browser.

git-svn-id: http://redmine.rubyforge.org/svn/trunk@642 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/models/attachment.rb

@@ -84,6 +84,10 @@ class Attachment < ActiveRecord::Base
     container.is_a?(Project) ? container : container.project
   end
   
+  def image?
+    self.filename =~ /\.(jpeg|jpg|gif|png)$/i
+  end
+  
 private
   def sanitize_filename(value)
       # get only the filename, not the whole path