legacy: import fixes
legacy: import and gettext fixes
workflows: moves remaining files

* Moves old BibWorkflow files to new workflows module.

* Updates imports in deposit module.
workflows: updates javascript

* Several updates to the templates and JS files in the
  workflows and holdingen views to conform better with
  standards and to fix some issues.

* Fixes a bad import in Holding Pen view.
workflows: add simple testsuite