deposit: eonasdan-bootstrap-datetimepicker fix
deposit: eonasdan-bootstrap-datetimepicker fix

* Locks the bundle version of the library to 3.1.3, because the latest
  one (4.0.0) is not working properly. (addresses #2689)

Signed-off-by: Sebastian Witowski <f69e5de8dea812f55abb37bf79df36126074c5c0@cern.ch>
Reviewed-by: Jiri Kuncar <2bdffcb416fed3002465740d19a053a39918cbe5@cern.ch>

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