Add pickadate and pickatime form types

[ioleo]

Add pickadate and pickatime form types useing pickadate.js widget.

Investigate options to create pickadatetime and pickadaterange.

[neoshadybeat]

@loostro , maybe will be a good idea integrate with the datepicker and timepicker

[ioleo]

Diffrent javascript plugins have diffrent options, so they should have diffrent formTypes in my opinion (easier to maintain/debug).