WebDeposit: BibWorkflow integration & enhancements

• Adds form validation after POST submit and renders the errors. Co-authored-by: Jiri Kuncar <jiri.kuncar@cern.ch>

• Moves column user_id from depDraft to depWorkflow.

• Associates a workflow with a user.

• Appends field icons to input fields.

• Groups all the subfields of a formfield in a gentle block.

• Fixes error rendering for subfields.

• Allows a field to autocomplete other fields by returning a dictionary with field: value structure on validation.

• Moves error checking from blueprint to a new function 'draft_field_error_check()'

• Typeahead sends an ajax request for every change while the previous request is still running. That makes older requests override newest resuls.

• Aligns field labels to the right. Reported-by: Jerome Caffaro <jerome.caffaro@cern.ch>

Signed-off-by: Jiri Kuncar <jiri.kuncar@cern.ch>