Transfer detail view: enable DC metadata

refs #6217
Add saveDublinCore microservice
filesystem_ajax#directory_children: fix parent directory name
wip
wip
Fix archivematica dashboard import path
DublinCore: make sure Django settings module is set
Correct variable for DublinCore microservice
Add new transfer/metadata/edit urls
transfer/views: fix missing comma
transfer/views: Add missing imports
transfer/views: inline use of obsolete model method
Create more transfer equivalent forms
transfer/views: Fix stray reference to ingest template
Add transfer metadata edit template
Transfer metadata edit: continue if key missing
transfer.views: add missing import
saveDublinCore: note when not proceeding
Adjust timing of saveDublinCore in transfer
saveDublinCore: log saved metadata