deposit: datetime picker library modification

* Changes the datetime picker library from the jQuery UI to bootstrap-datetimepicker.

* Increases the consistency with the Bootstrap design.

* Introduces new [JS library](https://github.com/Eonasdan/bootstrap-datetimepicker).
What about using latest version of `eonasdan-bootstrap-datetimepicker` from https://www.npmjs.org/package/eonasdan-bootstrap-datetimepicker ?