inconsistens error message

Usually the error messages ends with a new line after the last word or punctuation mark. But the "blackboard not existing" error message is inconsistens. All operations (except the status operation) returns the "blackboard not existing" error message with a space and a new line at the end.

Usually the error message "no blackboard name passed" has a dot after "...no blackboard name passed". The delete operation returns the error message with an exclamation mark instead a dot.