Update backlog files' status

refs #6131

Update arranged status of files to track when a SIP fails or completes
successfully.

Index AIP marks files an being in an AIP, and submits a
deletion request to the storage service when all files in a transfer
are in an AIP.  Transfer UUID is tracked for each arranged file to
enable this.

Failed and rejected SIPs run failedSIPCleanup.py, which deletes
SIPArrange rows for each file in the SIP, making them arrangeable again.
Add view file to SIP arrangement

refs #6131

Add two download files to filesystem_ajax: one that proxies to the
storage service, another which reads from local disk. Update view file
to use the storage servie, update browse AIP to use the local FS.
Update archival storage to use storage service helpers, so the base
storage service URL is only fetched in one place.
Remove unused transfer browser

Early attempt at SIP arrangement, superseded by existing SIP
arrangement.