Fixed missing templates in accept invitation action.
Only show undeleted articles in delivery/stock_taking forms.

Fixed 100.
Ensure mail privacy in message reply and show view.

Thanks to @JuliusR for reporting.
Fixed bug in reset password error handling.
Fixed error message, when using GET for password reset actions.
Merge remote-tracking branch 'bennibu/rails3' into rails3

Conflicts:
	app/controllers/login_controller.rb
	app/models/message.rb
	app/views/sessions/new.html.haml