Fix setSingleDate function
Fix setSingleDate function

There were a mistake with my previous modification because after selected a value and reopen the calendar shows duplicate month in the new two months view. To fix this, when option 'singleDate' is set to 'true' and option 'singleMonth' isn't set to true, It's necessary to invoke 'nextMonth' function in 'setSingleDate' function to render correctly calendar's two months view .
longbill/jquery-date-range-picker,fede91it/jquery-date-range-picker,longbill/jquery-date-range-picker,darkdiesel/jquery-date-range-picker,dsgraham/jquery-date-range-picker,darkdiesel/jquery-date-range-picker,dsgraham/jquery-date-range-picker,fede91it/jquery-date-range-picker