Fix test errors on 1.9.2 after acts_as_journalized merge. #412

Remove returning since it causes deprecation warnings. #414

Conflicts:
	test/unit/journal_test.rb
	vendor/plugins/acts_as_journalized/lib/redmine/acts/journalized/permissions.rb

it is more accurate in this case

running single test without RAILS_ENV=test prefix seams to work without it.

using version < 2.0 since later versions do not work w/o backports on Debian Lenny

* following setup instructions from http://gembundler.com/rails23.html
* adding generated files to .gitignore and .hgignore
* removing config.gem calls
* adding Gemfile that should work with all supported dbs and interpreters
* removing work-around for rubygems 1.5 deprecation. this seems to be fixed since now bundler handles the gem loading

Introduced in 1eee7312