Installed jQuery.datetimepicker

https://github.com/xdan/datetimepicker/commit/3e320c9046f9c735bbff1c9e39056f
Swapped out jQueryUI datetimepicker for xdsoft datetimepicker
Removed jQueryUI datetimepicker
Added seconds to timepicker. Added masks to all datetime pickers
Fixed a couple of references to "localize" templatetags library
This was removed in 99a70b3
Merge branch 'master' into pr/286
styled datepicker nicer
Added I18N to new datetime picker
Merge pull request #286 from kaedroho/new-datetime-picker

New datetime picker