[#56037472] Allow cross-project/study resubmissions
Billing event tests include request
[#56277320] Sequencescape accepts full manifests
[#56277320] Refactor to bring header config together
[fixes #56277300] Tube manifests now work

The code was incomplete with a placeholder for the
column header. Works now, but shares a template
with the plate manifests.
[#56277300] Tube manifests use own template

Ensures that headers aren't misleading.
Merge pull request #799 from JamesGlover/56037472_request_additional_sequencing_does_not_support_cross-study/project_requests

56037472 request additional sequencing does not support cross study/project requests
Merge pull request #798 from JamesGlover/EPIC_sample_manifest_updates

Epic sample manifest updates