updated prototype (1.50) and script.aculo.us javascripts
mail notification removed for projects/roadmap in migration
updated documentation with new setting options
removed strong tag for version name in settings view
rescued to_date exception when displaying a custom value
lost_password option checking in account controller
setting password_lost renamed to lost_password
added a setting option to set max number of issues in export
associations loading correction in projects/export_issues_pdf
issue list pdf export modified
