deposit: form button click fix

* Fixes refactoring issue with form button clicks not being sent to
  server.

Signed-off-by: Lars Holm Nielsen <lars.holm.nielsen@cern.ch>
deposit: jquery datepicker leftovers

* Removes jQueryUI css which is no longer needed after integrating
  bootstrap-datetimepicker.

Signed-off-by: Lars Holm Nielsen <lars.holm.nielsen@cern.ch>
deposit: uploader fix

* Fixes require statements.

Signed-off-by: Lars Holm Nielsen <lars.holm.nielsen@cern.ch>