Get the public identifier from the request
Change the revertToken to revert_token.

revertToken was always empty
More precise response message.
Distinguish between blob and storage volume delete
The header is lower case in the request.
Also allow localhost (for testing)
Merge branch 'updateForTestingInQabelCore' of github.com:jasinai/qabel-storage into jasinai-updateForTestingInQabelCore
Merge branch 'jasinai-updateForTestingInQabelCore' into protocol_update