Update jquery-ui-timepicker-addon.js

Fixed a big bug on the "go to today" functionnality. When the month is not the current month, the date change didn't work, because the div ".ui-datepicker-today" was not there.
Merge pull request #753 from ylorant/dev

Update jquery-ui-timepicker-addon.js - fixes "go to today" functionality when not the current month date change doesn't work since ".ui-datepicker-today" class was not there.