Migrate the whole app to Rails 3.2.11 and polish up things

I've migrated the whole app from Rails 1.1.4 to 3.2.11 and use
state of the art technology fo AJAX Request handling with
unobtrusive JavaScript (Coffeescript), new Rails techniques and
the new Ruby 1.9 syntax. I've also use a more Rails 3 like
folder structure, so nothing is there where it was before.

WARNING: I've startet with a new Rails 3 project and copy the files
one by one by hand over from the old project. The application
works, but there are a lot of things that are not ported at the
moment like the API. The code for the migration is the 1.2.1 release
from rubyforge, so the changes from 1.2.1 to 1.2.3 (Github release)
are not included jet.