The given space id is checked in application.properties.
Most of the treatments have been moved to a "components" folder,
allowing us to create easily a new "migrate_several_projects" (or
"bulk_project_migration") later.
The workflow can be launched from the single project view on the nG6
website, when logged a superadmin user.
The project's space_id is visible to everyone on the single project
view.
A warning indicating that the migration updates the retention has been
added to the workflow's form in single project view.
More logs in ng6.log, and the new log file MoveProject.stdout. (path
exemple : [...]/jflow/work/switchspaceid/wf000452/MoveProject_default/MoveProject.stdout)
CSS updates for the project views.
For new space_ids, the <space_id>/run and <space_id>/analyze
directories will be created if missing.