Try to use actionpack gem to generate guide when Rails is not vendored

Prepare for final 2.3 release

Fixed that redirection would just log the options, not the final url …

…(which lead to "Redirected to #<Post:0x23150b8>") [DHH]

Template#mime_type should not use Mime::Type when Action Controller i…

…s not included

Doc updates

Missing changelogs for relative_url_root changes

Tag the RC1 release candidate

Latest release.rb script

Replace missing tag for:

http://weblog.rubyonrails.org/2008/9/3/rails-2-0-4-maintenance-release

Santizes redirect_to arguments, fixes compatibility problems with old…

…er versions of ruby.