fix undo index going out of bounds in some cases
merged code & .sh_source statements into 1 + disable outline
Merge branch 'fix-undoindex' of git://github.com/imnotjames/LRTEditor into imnotjames-fix-undoindex

Conflicts:
	src/LRTEditor.UndoPlugin.js

only reset undoIndex if it wasn't null already
Merge pull request #2 from imnotjames/fix-undoindex

fix undo index going out of bounds in some cases