Enabled the use of pdf.prawn templates from ActionMailer for attachment generation
Correctly detect HTTPS requests by just asking #ssl? of the request object
Remove empty prawnto tasks

Because they were causing deprecation warnings
Add rails_xss support

Without the raw calls the rendered template is HTML escaped when rendering a pdf
as a mail attachment.
Update template handlers for Rails 3.2
Update the call method to work with rails 3.2
Update the ActionController monkey patching