Whitespace and getDate/setDate fixes

Extra tabs removed and line endings cleaned
getDate is now properly accessible from $(target).datepicker('getDate') and correctly returns date object with time
setDate is now properly accessible from $(target).datepicker('setDate') and can set both date and time
added new method setTime, accessible from $(target).datepicker('setTime')
calling .datepicker('setDate') with no date now sets the default date as in original datepicker code
time is set to default when calling .datepicker('setTime') with no time or calling 'setDate' with a date and no time
added new internal function _parseTime to parse string times from any source

Author: doublerebel