Updated undo/redo to new Redactor API
Updated undo/redo to new Redactor API

Open343/elefant,jbroadway/elefant,twheel/elefant,jbroadway/elefant,twheel/elefant,AxorB/elefant,Open343/elefant,evan70/elefant,jbroadway/elefant,twheel/elefant,evan70/elefant,R-J/elefant,evan70/elefant,AxorB/elefant,R-J/elefant,R-J/elefant,Open343/elefant,AxorB/elefant,jbroadway/elefant