okay at home again

Implemented an Undo/Redo System and removed a bug in the "Delete Entity System" in the last 2 hours. With this system you'll be able to undo/redo over 100 steps (moving&rotating&scaling&changing skills/flags of object / select - reselect object and much more).
If it's possible I'll also try to include undo/redo for deleting/creating objects. I'll have a look at it.

Maybe I'll even add a journal view (like in Photoshop) if anybody thinks such a feature would be needful.
(sth. like that:

You see all Steps (in my case 100-500) listend and can jump back / foreward to one specific step if you want to.)

Triple-X