Added integration tests for permissions editing - Fixes #377.
Tweaked permissions edit view layout.
Forgot to add these files in last commit.
Merge pull request #382 from duke-libraries/permissions-ui-tweaks

Added integration tests for permissions editing - Fixes #377.
account for pre-assigned PIDs in batch object relationship validation; closes #381
Merge branch 'iss381' of github.com:duke-libraries/dul-hydra into iss381