If the build is based on imported instrument data, use imported protocols
More compact syntax
Allow for builds without disk_allocations

This will let the command not fail on builds who do not have a
disk_allocation.  One common reason for this is that the build was
unstartable, but other causes may exist.
Base class must be imported
Merge pull request #151 from apregier/mage-tab-for-imported-data

If the build is based on imported instrument data, use imported protocols
Merge pull request #157 from davidlmorton/unarchive

Allow for builds without disk_allocations