Modify filepath not storing the user id part (to be continued)

[kostas-kou]

Note that changes to the first step makes all other things break, so this has to be kept on a separate branch until it can be merged into the master branch.

As a developer
I want to change the way the filepath is stored in database (remove the user id part)
so that the user is not part of the filepath

Note

Changes required in these places:

• s3inbox should not store the userid as part of the filename in the database
  • the message to cega should not include the userid in the filepath (no message should include the userid in the filepath).
• ingest needs to be able to find the file, so it has to concatenate the userid
• mapper needs to be able to remove the file from the inbox
• download - no change if it's fixed above
  • s3
  • encrypted s3
  • decrypted REST

[nanjiangshu]

API endpoints that reveals the user-ids as listed in the issue #1095 should be fixed

[MalinAhlberg]

The filepaths should not start with a /