Added a link to add a new category when creating or editing an issue.

The user is prompted for the category name. The new category is created and the drop-down list updated using an ajax call.

git-svn-id: http://redmine.rubyforge.org/svn/trunk@648 e93f8b46-1217-0410-a6f0-8f06a7374b81

app/helpers/application_helper.rb

@@ -77,6 +77,11 @@ module ApplicationHelper
         }))
   end
   
+  def prompt_to_remote(name, text, param, url, html_options = {})
+    html_options[:onclick] = "promptToRemote('#{text}', '#{param}', '#{url_for(url)}'); return false;"
+    link_to name, {}, html_options
+  end
+  
   def format_date(date)
     return nil unless date
     @date_format_setting ||= Setting.date_format.to_i