PACS pull info

[jennydaman]

If there is an error during the process of retrieving data from PACS and registering the file to CUBE, there should be a way for the user to find out about this by contacting the CUBE API.

Currently, a "system" account is able to register PACSFiles with CUBE. It should also be possible for that user to register "PACSErrors" or "PACSLogs" to CUBE.