Changing files to have in progress status and not current
Merge pull request #375 from ENCODE-DCC/1618-fix-file-object

Changing files to have in progress status and not current
Make the aws file migration script also upgrade files.
Fix aws import script
Missing versions
Fix migrate script
Fix example script to work with new schema.
fix problem indexing long file_size.
Add NTR to treatment regex pattern
Make sample data md5sums unique
Make file md5sum an alias, ensuring uniqueness.
Update keys for file.
CORS Allow Range header. Also needs configuration of S3 buckets.
Tweak CORS headers.
Merge remote-tracking branch 'origin/master' into 1693-md5sum-constraint
Merge pull request #376 from ENCODE-DCC/1693-md5sum-constraint

1693 md5sum constraint
Add anchor[name] to dehiglight anchor targets in richtextblocks.
Merging in master.