Save file UUID with arranged files

refs #6131

Fetch file UUID from ElasticSearch for arranged files, based on the original
relative path. Strip the UUID from a transfer name when creating a SIP from
a Transfer.
Create SIP works better

refs #6131

Add new create SIP function for arranged SIPs, and remove the old create
SIP function, helper functions, and endpoint.  Create arranged SIP function
creates the SIP object, adds a default processing config, adds the arranged
files to that SIP and updates the locations.  WARNING this only works with
files that originated on this pipeline.  Also, clean up headers.
Don't enforce unique arranged paths

refs #6131

Enforcing unique arranged paths causes problems when a SIP that has been
created had the same path.  Remove requirement for unique arranged paths
for now.