added save_as to NoteAdmin and limited time slot to the last four weeks. made renew action inside a method
added save_as to NoteAdmin and limited time slot to the last four weeks. made renew action inside a method

radio-helsinki-graz/pv,nnrcschmdt/helsinki,nnrcschmdt/helsinki,radio-helsinki-graz/pv,radio-helsinki-graz/pv,nnrcschmdt/helsinki