Import log

Provide minimal import logs per fileset. The log files are stored in the managed repository and linked to the fileset as a file annotation.

To test: An import log should be created per fileset. In the current implementation it will have the same name as the fileset directory. The originalfile representing this file should be attached as a fileannotation to the fileset. Ideally a test would be to import and then check using sql that the original file exists and is linked to the fileset. If possible check for the existence of the file in the ManagedRepository. 

At present the amount of information in the log is minimal but there should at least be a list of steps in the file.