Fixes for DSC-323
Merge branch 'master' into nn-dsc-337
empty fields fix
Merge pull request #547 from nla/bs-dsc-333-constraint

Bs dsc 333 constraint
changes to extract select values properly
merged with master
minor formatting
Merge branch 'master' into nn-dsc-337

Conflicts:
	src/banjo/upload/step/CreateDerivativeForImageStep.java
Merge branch 'master' into nn-dsc-337
remove alert on remove field
Merge pull request #544 from nla/nn-dsc-337

Fixes for DSC-323
Merge pull request #549 from nla/bulkEdit-dsc-379

Bulk edit dsc 379
Merge branch 'master' of github.com:nla/banjo into bs-dsc-459-440