Use eonasdan-bootstrap-datetimepicker bower component

The https://github.com/Eonasdan/bootstrap-datetimepicker.git dependency can also be accessed as a normal Bower component by using `eonasdan-bootstrap-datetimepicker` instead of `bootstrap-datetimepicker`.
Merge pull request #1 from soundasleep/patch-1

Use eonasdan-bootstrap-datetimepicker bower component