mapedit work

-added support to copy temp mets file to live dir
-fixed issue where incoming points would always be written even if there were no points
-fixed issue where edge points would not parse properly.
-fixed issue where rotation would not set at load (workingoverlayindex not set)
-fixed issue where previous overlay data would not be replaced
-added support for save switching (save/apply/reset)
-added better support for apply and save
-fixed many small saving issues (null references,recursivness,etc)
-added method to create back of current mets at start