minDate/maxDate set by "option" method

[lmborba]

Previously, when I set minDate or maxDate of a datetimepicker by "options" method, the datepicker is affected, but the timepicker is not.

This is an important feature for time interval input.

Now the minDateTime, minDate, maxDateTime and maxDate properties of datetimepicker are set according to minDate and maxDate of datepicker in the _limitMinMaxDate method.

[trentrichardson]

Hey Imborba,
Could you apply this to the dev branch and re-issue the pull request? Thanks for your contributions!

[lmborba]

Looking at the dev branch, I have found the solution for the previous problem.
I just had to set minDate and minDateTime.
The most elegant solution, for me, would be just to use the minDate attribute to set the time and date pickers. This is not a hard task to do and I can do if needed.
Thanks for the add-on.