remove trailing white-spaces from app/models/version_custom_field.rb.
remove trailing white-spaces from app/models/workflow.rb.
remove trailing white-spaces from app/models/journal_observer.rb.
remove trailing white-spaces from app/models/mail_handler.rb.
remove trailing white-spaces from app/models/news_observer.rb.
remove trailing white-spaces from app/models/principal.rb.
remove trailing white-spaces from app/models/issue_custom_field.rb.
remove trailing white-spaces from app/models/issue_observer.rb.
remove trailing white-spaces from app/controllers/wikis_controller.rb.
remove trailing white-spaces from app/controllers/workflows_controller.rb.
