Merged r9551 from trunk.
Merged r9582 from trunk.
Fixed the path displayed in error message.
Updates dispatch.fcgi.example to work with Rails3 and removes CGI handlers.
Adds environment information display to /admin/info.
remove trailing white-spaces from test/unit/mailer_test.rb
Adds a simple script/about.
Make sure we don't boot with plugins in vendor/plugins.
Let redmine:plugins:assets mirror a single plugin assets with name=.
Fixed that sidebar with hook content only should not be hidden.
