StopMotionHelper

Changed same name prevention to use numbers instead of continiously adding I's, that should make file size for resulting entity names

Fixes to overwrite prompt not working with the folder system, as well as made quicksave copying abide folder system too

Big save windows update, adds ability to browse folders in save and load windows, some tweaks to spawning function, save window got more options to use with adding and deleting folders, putting up a prompt on overwriting or deleting saves, when trying to overwrite a save, it is also possible to use append mode to select which entities should be kept in resulting save. added packing saves into entities so they could be duplicated